Since this is a wishlist - built in battery grip would be great!
I said that at least 6 months ago.....
My wish list is:
- better ISO performance ( 1 stop will be great)
- slightly improved AF and DR
- same resolution
- two body types: 1 normal body (like today 7D) , and one with integrated battery grip ( like 1D series)
if Canon will do that i believe that they will have even more success wit the crop frame sensor camera.