Why do you still want the PowerPC? Look here:
http://www.7-cpu.com/The fastest G5 is not that much faster than Cortex A-15. But the G5 takes 75-100W power... and it doesn't seem there is going to be a successor.
What the PowerPC Amiga is going to look in 5 years? 3000$ machine with half the processing power of 300$ cell phone? Or maybe POWER8 monster so expensive, that hardly anyone can afford it, where using more than 1 core or more than 2GB RAM would require apps written in some strange, inefficient way - just to allow the system to maintain binary compatibility with legacy software ? Don't be silly - PowerPC is a dead end, ditch that bitch!
There are two reasonable ways to go: x86 and ARM. And don't even think about OS4/MorphOS-style m68k compatibility! We need multicore support. And 64 bit - 2GB RAM is what my tablet has, I really expect a desktop (even thin desktop) machine to have more (reasonable minimum for the photo processing software I use is 64-bit system with 4GB RAM...). This means API rework, so AROS-style would be the only possible way to achieve m68k compatibility. Help Toni Willen to integrate QEMU into UAE, and you will also be able to have PowerPC compatibility in a similar way.
