Also regarding nanometers, ARM design always seems to be one step behind. Cortex A8 has 45 (so does my core 2 duo but it's anything but new) while i7 is built on 32 nanometers and the technology for 20 nanometers has already been announced.
Also this would be a great step for cross platform applications and we could install the same .rpm on our PC as in our mobile device.