@fishy_fiz
The MiniMig would be a downgrade to a lightly expanded 1200 in my opinion. It has some advantages with compatibility to older games, portability and syncing to newer monitors but it has less ports, expandability, compatibility (no 68020), and no AGA. I think the 68000 will continue to be less supported as it's less common for regular users, optimized code for the 68000 doesn't run well on 68020+ (68000 is 16 bit while 68020+ is 32 bit), the code is larger and some common CPU features are missing. The fpgaArcade is really the only option at the moment if you need a "new" 1200 replacement soon. Here's how I see the fpga boards...
MiniMig = Amiga 500 with massively overclocked 68000
fpgaArcade = Amiga 1200 with 030@50MHz or 060 accelerator
Natami = Amiga 4000 with 060 accelerator
An fpga Clone-A from Individual Computers could make a surprise appearance with who knows what specs. The Natami will be fully AGA backward compatible so even if you don't use the new SAGA features, they won't hurt compatibility. It should have a FPU, the best RTG (chunky) support, 3D at some point, and the most expandability but at a significantly higher price.