I thought it was strange that this post did not already exist..
So post your wishlist for VS next.
Mine would be better refactoring and better intellisense a'la resharper. Also it would be nice to have built in tips on best practices. ex. warning if Dispose is not called on objects implementing IDisposable.
EDIT: Ignore the last sentence. I just hadn't seen the Code Analysis tool before, after years of programming in VS!!!!