I feel like this has always been the failing of new Amiga projects; targeting the wrong demographics of a very small niche group.
Me personally I would target the A500 with a possible A1200 enhanced version because that is pretty much what the main demographics were when the Amiga finished commercially.
Most recent stuff that I've seen released for the Amiga seems to be an after thought which results in 060/PPC setup for a quick port.
It is easy to forget how much more OCS/ECS Amiga's are out there compared to AGA. Especially on a forum like EAB.