It's very insightful that people think FPGA system(s) are the better choice for a 'modern' Amiga system than X1000/SAM boards and we are not exactly drowning in FPGA options are we?
I think it's time to admit that OS4 on 'next gen' hardware isn't going anywhere.
Hopefully in the future there will be more FPGA options for use 68k users (eg CloneA, FPGA Arcade and FPGA accelerators for classic HW). I personally think a fast (cheap) FPGA 68k computer with RTG/LAN/USB + a customized AROS 68k OS is the future for a modern Amiga.
Someone needs to write a fully modern browser for 68k for that to be the case...