I loved this in WW, the fact that anything could be a weapon made things much more interesting. Also the fact that near the beginning the weapons dropped off Moblins were actually more powerful than the sword Link was carrying, it gave an extra emphasis to attack certain enemies that you could otherwise avoid completely without them noticing you. And fighting the rest of the enemies in the room was a bit easier after getting the enemy weapon. Plus it was fun to have some extra reach when using the spear. That made swinging around at keese and redeads a little better.
This was something I thought of when I first saw the video displaying the motion controls, I hoped that they would include the enemy weapons that you could randomly pick up and use. And if so, then they should include a few more things to play with if varying sizes and amounts of damage they can give. Say a Darknut sword might be a little more powerful than the sword you normally use, but it will break after say, 10 or so hits. Or a dagger grabbed off a Bokoblin would have little to no range at all, but could be an instant kill item is you stab just the right spot. This could also be a use for the shield meter, there could be other items and shields you could steal off a dead moblin or Darknut and use until their damage meter runs out then you have to go get another. I can just imagine roaming back to previous rooms in a dungeon to collect up a new shield and dagger before entering the boss room.
