Hell yeah!!
Those are what I call supportable initiatives. It wouldn't be cheap and it wouldn't happen quickly, but it should be something that is pursued.
This is coming from someone who is the kind of geek that gets off on microprocessor architecture. I love the Power ISA, and I'm a big fan of SPARC and MIPS. But just because I have a soft spot for these things does not mean that the right choice for a viable computing platform is one of these esoteric CPUs. If intel x86 isn't your "cup of tea" then you have ARM; Those are the only choices.
I also get really nerdy about Operating System Architectures. I'm a big fan of BeOS and QNX, but I would still like to see AmigaOS play a more significant role in today's computing market.