Overall, just a more stable product. Every update / change seems to make the aTV just that much less stable. I’m SO tired of seeing that silver Apple logo!

Another thing would be the ability to have small upgrades (e.g. .1 or .1.1s) right from the box over the 'net instead of having to do the flash drive every time. I’m SO tired of:
make drive
unplug aTV
load software
reboot aTV
and then the crap shoot of finding out what works and what takes you back to the silver Apple

…and then seeing a .1 update the next day or two later.