Skyward Sword was beautiful to look at, but the gameplay and dungeons weren't so great compared to previous titles. I think they want to take Zelda in a new direction with this game, and so far I like what I see.
Well, we've all seen the differences between the trailer for Twilight Princess and the actual game. Changes will be made in the end and things will be added and cut out. I like the larger world - the other 3D games only gave you the illusion you were playing in a large world. I'm looking forward to exploring.