I am fine with SS motion controls but Nintendo definitely need to have option for classic controls if they can do that.
About queastion What would have to be changed?
Beside obvious 1080p, new textures and better lighting (I can't imagine how great SS will be looked with this), all kind of warnings and notifications especially when you take rupee for 10th time you will get notification about that same rupee again and again, and again....also Hero Mode from start of game. Fixing this things is very realistic for SS HD.
There are two more things that I didnt like in SS, but those can't be fixed with HD port, terrible backtracking and linearity.







