I didn't think the camera was so bad, but the Pachinko machine and some other vertically-aligned sections like the climb up the cage behind the Roller Coaster were awful.  
Back on the topic of SMB DS, I hope they've got the map screens back.  I'd also like to see a cameo by the Koopa Kids...not necessarily 7 individual bosses, because I think Nintendo can do more with brand-new boss designs, but maybe they could form one super boss, or they could be mini-bosses.  I hope the game is long, too.  It seems like Nintendo hasn't released a really long 2D platformer since Yoshi's Island and the DKC games.  I guess Mario vs. Donkey Kong was pretty long, but the levels are puny, too.