I got a bunch of FPGAs and I'm building my own 68k/6502 machine to run my C programs and to tinker with assembly. Seems that I have a bunch of these chips so it will rapidly grow into a multiprocessor thing.

This is likely the only way forward other than RISC-V on FPGA. But they aren't exactly well defined. Or open. Solid hardware RISC-V is interesting and medium term viable but I foresee a world of blobs waiting in the wings. Time will tell.