I'm not against PPC in terms of architecture, and I understand tht going x86 is a different kind of step than the move from 68k to PPC, as that doesn't just change instruction sets, but also has the change in endianness to tackle, and is thus a lot of work. We know it took a very long time to get to PPC. It'll take another very long time to see x86 if that's chosen. Yes, Apple shows us it is possible, though they did have a bit more money to throw at the problem. AROS also shows us some things.
But, while I'm not against PPC, I do find it very frusrating that I cannot get a portable AmigaOS solution, even though PPC laptops do exist.
