The Forest Temple from Ocarina of Time was a great dungeon, but I probably wouldn't be able to tell what the theme was if I didn't know the name. The enemies and the boss had barely no forest theme. There were some trees and such, but it wasn't enough to make the theme clear and vivid.

I think in future Zelda games, Nintendo should tear down the idea of the dungeon themes and kind of rethink the idea. It's not that I don't like the idea, I just think there's room for improvement.

New temples should definatly have themes for most of them, how boring would it be to walk through 8 dungeons that all had the same feel to them, nintendo just needs to get more creative on how they implement the elements, and I don't want forest, fire , water first, its annoying, they could do double themes, those are always interesting, like snowpeak temple with the ice and the fire. They could easily mix it up. And no more linear-ness! That destroys what zelda was. A game to explore. Whats exploring if the path is set up right before your eyes, its like walking into a forest but only allowed to stay on the path….. oh, I guess twilight princess did that too, common nintendo! Whats your problem!

K, I'm done complaining

I liked the whole linearity of the dungeons, finding the weapon you need to defeat the boss, find the key, get to the overworld, find the next dungeon and so forth. What I'd personally love to see in dungeons is new themes and maybe more rooms. Twilight Princess, which is my favorite, introduced a city in the sky, which I thought was an awesome idea for a dungeon. Maybe more enemies associated with the theme is a better idea, the only enemies in the Lakebed Temple associated with water were skeletal fishes.

As for the Mega Man theme, I'd think that the item you get in the previous dungeon defeats the boss you're gonna face and the new item defeat the next boss, or something like that. I do agree with the whole "One defeats a certain boss" thing.

So, more themes, more dungeons, more villains associated with the themes and keep that simple, straightforward linearity because it reminds me of story arcs from a comic or a TV show… (Not THAT show)

in main bosses they can be easy althought, but MANY phases thatd be funnier some 3 phases and a boss could drop a heart container thats really ok, but the rest i agree

Oh, rupees, right: they are too overdone imo. You find them everywhere and faster than you can spend them, in every 2nd pot, under every 3rd bushel of grass, from every 2nd enemy kill. The most annoying fact in TP in my eyes was that I often were forced to warp out of the dungeon just to spend my rupees somewhere and warp back so that I'm finally allowed to open a new chest containing 50 rupees or such. That is only because all these pots force you to destroy them leaving rupees in 80% of all cases. That should be reduced drastically. Instead they could introduce special money making locations (even minigames are such locations as you get 50 or more rupees if you win a game). At the same time get rid of these extra money bags which raise your capacity of rupees you can carry with you or reduce it to only one extra bag at least raising the capacity by 100%. There's no reason for restrictions like these unless you need the highest amount to buy a special item (like the magic suit in TP). Oh, and please make elixirs more expensive again. They became far too cheap in the past.
In other words: give us a reason to spend our rupees in something important!

Something I really liked about Link's Awakening is the fact that you have no bottles and therefore could not store elixirs and even faries. Ok, I like the bottles and it would be nice if they return but at least limit the amount of faries you can carry with you to only 1 at a time. They are your life backup and not a reason for the player to be lazy by not using a life elixir in time and rely instead on faries that recover you automatically.

What Zelda really lacks are difficulties you can play with. Two difficulties should be standard and the Hard one is unlocked if you play through at least once for instance. This way you can vary enemy behaviors which can get challenging for more advanced gamers (best example is the spider boss in the TP temple of time… oh, horribly easy and no challenge at all!)
There was a time when Zelda was really hard or at least challenging for most people. With difficulties you could also control the difficulty of puzzles in a dungeons (whenever it is logically possible) so when you play through on hard you get a whole new puzzle challenge which was not available in other difficulty levels.

Well, this was longer than I expected now and most things are more general and not only dungeon-related but if I'd made a Zelda game it would introduce these features in one or another way. That's simply my imgination of upcoming Zelda titles.

in general, I prefer more dungeons over only a few but it depends on how they actually design it. If a dungeon is big enough so that it has potential for almost 2 dungeons or if you have to go there for a couple of times during your journey, it's OK to have less dungeons. However, the role of side quest became too important in titles like TWW. I like sidequests but especially in this game I had the feeling it was very overdone with them and I felt the main quest to become secondary, because there was so much to discover that it just didn't fit when someone said: "Hurry up to do this or that, otherwise you will fail." that it just didn't fit when you could spend your time with fishing or playing minigames while someone is waiting ages to get helped by you. MM mask was an attempt to reduce this problem with the time factor.

The role of dungeons in Zelda is essential, that's a fact. They were and should always be a core part of Zelda but they could be more "open". Concerning the dungeon themes it's right that many things are repeating over and over again… but honestly, it's hard to come up with really new thing nowadays, especially compared to other games that it would either look like a copy from game XY or hard to be identified with a typical Zelda-like dungeon.
I could imagine, however, more complex types of dungeons where you can visit almost every room at a later time when Link gained new abilities and you always have something left to discover… a similiar concept the Metroid Prime series is built on. Also more than one boss and even special item per dungeon could be possible.

Or lets think of the good old dungeon items map, compass and big key. Does the map need to show everything? It could be unreadable at some parts (where usually hidden rooms or something like that are located at). And why only one map? TWW introduced a very nice concept of treasure maps you go from sidequest. Why not port this over to dungeons as well? Let's say, you find the global dungeon's map but with 5 gaps in it. Now you find another piece of the map in a hidden room or you get it from sidequest XY. As soon as you get the missing piece you can visit the dungeon again and now there is a new secret path you can use (which is of course blocked until you got the map piece even if you know the path). And there you find a room or a few more which lead you to a chest containing a heart piece or something.
And the compass… does it really have to show every chest? especially those appearing "magically" when triggering an event like killing all enemies in a room or such are in my eyes no chests that need to be shown by the compass. Even special treasures containing heart pieces or other nice items should not be shown. However, the compass could display the amount of heart pieces left in the dungeon but not their actual location.
The role of the big key… I liked the fact that you also need it to open the big chest containing the special dungeon item in ALTTP. I'd like to see this again.

Concerning the dungeon boss itself, they need to be more dangerous in my eyes. Come on, it's the dungeons boss and it has to be hard as shit using different strategies to attack you and also react differently depending on how the player reacts (of course with a save point somewhere in range, so you reach the boss quickly if you lose).

Heart pieces and heart containers: they are special, they are fine and they need to be well hidden (there's no need to have a future teller to show you the locations of them). And now I say something incredible: get rid of these heart containers! All you need are heart pieces! Even if you kill a boss, let him drop just a heart piece and hide as many other heart pieces as you need to get a new heart container (I like the concept of 5 from TW more tbh) inside the dungeons. One or two easy to get and the rest hard to find or even only at a later time (see my map pieces proposal).