just wait, and for those who say that one of the bosses is the same as the one in PH just remmember that TWW had a very similar boss to Volvagia so boss recycling is really nothing new since alot of bosses have similar feels to other bosses in previous games.

now as for sound effects just think, pretty much same tidedideeeehhh used everytime we get something in a treasure chest and tididededideeeeee whenever we discover or unlock something new but, these are the small things that make zelda ...... zelda!

just be patient and play the game and decide for your self as for the train thing I got over it and it could possibly be awesome or could even bear some sort of secret! just wait and play the game.