I (I guess like a lot of people) would be more interested in build quality, screen resolution and viewability in light conditions but most of all... Better battery life!!
I don't play anything more than games like angry birds and risk, my phone is more of a utility device. Calendar, emails, the bay, IM, social network etc etc.
The only apps I buy are simple games, widgets, utilities.
I have a desire, and yes would love this to be quicker, but for me I don't see gpu power ever being why I want to upgrade. After this new wave of phones I really see hardware being in excess for most people with the justification for upgrading being a new toy lol. Infact my next phone I may even be willing to sign a 24 month contract :0