I've not tried the new 2.0stuff (I'll wait for it to come out of beta) but here are 2 small things that I'd like:

Kill the menu rotation animation. Very cool at first, but I'd prefer instant response.

Adaptive menus.The more the menu is used the closer to the button it is. I.E. I bring up the menu. The item with the most times I've decended into is highlighted. To the left and right are the next two common ones.

Mine would look like:
[ ... | Power Off | PLAYLISTS | Visuals | ...]
with values of ... | 7 | 10 | 8 | ...

This should be done for each menu.

Alternately, it'd be nice if it remembered where it was left in each menu, to a point. I realize that there is limited flash space, but even if you do this for a few menus, it'd still be great.