For my mobile devices, I'd rather see a modest computing power increase, and (assuming power per transistor shrinks such that power usage for a top-of-the-line

For my mobile devices, I'd rather see a modest computing power increase, and (assuming power per transistor shrinks such that power usage for a top-of-the-line CPU is approximately constant) we end up using around 5 to 10% of the current desktop's power. To me, a laptop with 20 hours of charge and maybe the power of a current quad-core would be far more useful than a short-lived, hot, noisy machine like we have now. The same goes for a cellphone. I'd rather have 100 hours of on-time than the ability to use heavyweight technologies. Being able to forget my charger without worrying much when travelling is far more important to me.