I dont really have any concerns. There hasnt been anything I've seen so far that I dislike, which hasnt happened since Wind Waker and WW is not only my favourite Zelda game by a large margin but my favourite game of all time. I was excited for WW's release but I'm far more hyped up for BotW so things are looking good and I just may have a new favourite Zelda game...
Any concerns i have lie with me and not the game. Ive got 22 days to avoid spoilers, theories and reviews, unlike SS where we saw damn near the whole game and had it ruined for us, i fear that instead of having seen too much of BotW, i actually know too much.
I saw the translated Master Edition Calamity Ganon map and now know the game's backstory, I now know how many giant Guardians there are too...
This worries me because BotW is about piecing the past together. I dont want the revelation of BoTW to be the translation of the Calamity map. I still love the backstory (if what ive heard is correct) and i'm sure seeing it play out will be excitng as hell but still, its something i know that the game may have been using as a massive piece of the puzzle... i just hope that the Calamity map translation is played in an intro like WW and SS or comes in early.
Though this is just one part of a long story, I'm sure there'll be a lot more to sink my teeth into. I just dont want the story spoiled for botw as opposed to the locations in SS being spoiled.
As far as dungeons go, i'm an overworld girl, i just hope the new main 4 dungeons are unique enough... i think they will be. Though i wonder how different theyll feel from Shrines.