Alright, again from a community standpoint some camps within it are already independently engaged thus I do not see this offer providing a benefit to those groups. Each of them has its own hardware support scheme and also in the software arena. Let's face it, Amiga-land is most likely permanently fragmented from its original roots / user base. Other than some general software code sharing or porting, these camps will never officially merge back into a single entity. Sorry but that's the way it is...
But from a common factor, the community does share a similar background; 68K hardware manufactured by Commodore and its accompanying operating system. So perhaps a common factor hardware 'something or another' could be accomplished that can go to a multiplatform OS base (AROS-OS4-MorphOS). This is already somewhat accomplished with UAE based software. Everyone incorporates it to some degree or another. This is the approach I suggest only in a hardware format.
So what about a really nice FPGA PCI type card that is stuffable into the various Amiga camp hardware architectures? A fast FPGA that could implement the 68K CPU/FPU's, custom chipset things or other desired features from the Commodore original design. Throw in everything the existing Catweasel does while one is at it. So the idea is - that each individual OS handles its own base functions like mass storage devices-ethernet-usb-whatever, and the expansion card provides an old world hardware experience. I say all of this because in looking at something like Amithlon, it demonstrates that various core hardware functions can be handled by modern hardware without the AmigaOS really breaking. Obviously Amithlon is only a partial solution regarding some features. Therefore take this same approach in an expansion card, and fill in whatever must have Commodore missing blanks you feel the need to have. Stuff it into your next gen AmigaOS hardware of choice and call it a day. The entire community wins and not just one camp. If I am not mistaken, such a similar card was developed already a long time ago. So what is the harm in taking a fresh look at something like this?
Being that FPGA is involved, a large degree of customization should be possible. Let's say Natami releases a killer new CPU core - cool, throw it in. Or the latest and greatest AGA core, etc... None of this work would be wasted or delegated to a single camp. In a small way, some unity could be built with this approach. Maybe there are a few models of this card eventually. A slower PCI based, up to super wicked PCIe-16 model that might have a much more powerul FPGA. While a card like this is built, provide any useful signalling to expansion pins. Any number of card specifications could be invented here.
So each new Amiga camp gets a piece, 68K and original Commodore stuff is retained and at an improved hardware level.
You build something like that, and I'll buy it, it is that simple.