I rarely have a RAM problem, so I couldnt care less about more RAM. Perhaps this is a benefit of being jailbroken, since I know my RAM use at all times, and I can easily clear the memory with a swipe of the finger.
Better battery or dual core is what is needed. Bigger screen would be nice too.
i wonder about the screen debate... its a two way deal i think sometime i prefer my screen on the droid x... but its also a larger area to get cracked..... maybe they will start making different sizes like the computers.. iphone mini, iphone pro. (i want compensation if this idea is taken apple! lol)