Even though only a few people have voted, I'm not surprised to see the preference for x86.
I selected 'Other' because the CPU should be one of the things that is decided last. First I would devlop a product strategy, then as part of the product development I would define my market, design the product in terms of features to cater to that market, assess the budget and estimate the product per unit maximum cost and target profit margin, then I'd look at the component requirements for the production of the product and I would choose the CPU that best delivers the target market features at the appropriate per unit cost. There's a whole bunch of CPUs that fit that criteria, but given the unit cost of PPC MC/IC parts, I doubt they would be at the top of the list.
Unfortunate for Hyperion, PPC was part of a strategy laid down over ten years ago and they've already expended many resources moving AmigaOS to the PPC and they are keen to get some return on their investment. The path of least resistance is to bundle AmigaOS 4 with relatively expensive PPC systems.
As a technology strategist, I would not recommend they ever port AmigaOS to x86 or any other architecture. It would be easier an more beneficial to start from scratch.