I never took issue with any of the previous water temples so I'm not too bothered with how they implement it in Zelda Wii U but if they are interested in switching things up I suggest they either do a water temple that isn't strictly a water temple and add another element/feature to it (like...
After watching some very convincing theory videos on youtube, I think Zelda U will either take place before or after Twilight Princess, but it won't be a direct prequel/sequel.
They really need to reinvent the wheel when it comes to dungeons. Have a few elemental based dungeons but then have a lot of completely new ones. I didn't like the forest/desert/fire repetition in SS at all. That game was way too repetitive dungeon and boss wise.
I'm avoiding it like the plague once the real meaty stuff comes out. I ruined SS in a way because I watched everything like a crackhead. There were no visual surprises left for me to discover.
I kinda like the theories about Link being a Gerudo or the game exploring the history of the Gerudos. Maybe the story of Ganondorf before he rose to power?
I'd love for them to incorporate roaming bosses. That'd be really fun and new. Didn't they kinda imply this with the monster in the E3 trailer? I'd love to have a few Shadow of the Colossus type bosses/situations outside of the dungeons.
I think it'll be around throughout the holiday season. I don't think it's going to be something that's as limited as the Pikachu 3DS. Nintendo wants this to be a hit and it would be silly of them to not have as many available as possible.