Yeah I couldn't care less about the cpu/gpu as we have got more than enough power, even the Galaxy nexus and galaxy s2 perform very well still, there is nothing that they can't do which the current phones can granted the gs 3, one s, xl and nexus 4 etc. Do feel more snappier and load somethings quicker. Plus having more than 2 cores I. E. S4 krait, let alone any more is kind of pointless really until Samsung etc. optimise android to take full advantage of having those extra cores, many articles about multi-core cpu's and android stating that software optimisation needs to be better as they have put it, just adding more cores for the sake of it.
Of course if all this new cpu/gpu makes a substantial difference to battery life then I'll be interested.
Multi tasking is more than good enough with 2gb ram.
For me it is going to come down to the following:
- screen, preferably samoled, which will limit me to the Samsung phone and htc's next mid range model probably but I could live with a lcd based screen as long as viewing angles are iphone 5 and one x etc. Good and colours are a bit vibrant/saturated
- camera quality especially in low lit areas
- designn and build, if Samsung go with the same style then it is an instant no no again, unfortunately I can't see them moving away from it

- software skin, need to see more of sony's skin, but I have never liked it before. Don't like touchwiz at all, features etc. Are great though but if everything else is good then I'll just flash a stock based rom and custom theme and I love sense, however, don't like the white backgrounds! Their next version better be good otherwise it is an instant no no since it is a pita to root and flash custom roms on their mobiles
- battery life, after being spoilt by the one s battery life and seeing the note ii battery life, I don't want anything less than them!
And if I am not impressed by any phone or they don't seem like a worthy upgrade overall then I'll wait for the nexus 5 or whatever else
I imagine everything else like the nled, audio etc. Will be improved.
Edit;
And most importantly it must be no bigger than the current phones I. E. Gs 3 and one x