One reason why the TFA might have chosen the Plus: the SE and SE/30 consolidate a lot of glue logic that are on PALs that can be cracked into not-so-easy to crack ASICs. The SE/30 has a notorious “GLUE” chip that has 80 pins, and most likely won’t be cloned anytime soon.
I wonder if it would be easier to design a new Mac model from scratch(ish) and put drivers in the ROM. AFAIK Basilisk II doesn't emulate a real Mac but the System doesn't notice because of ROM patches.
