Dumb question, but can ANY Pico-8 cartridge be ported?
Not a dumb question at all, but no, not really. This port was relatively manageable because a C version of Celeste already exists, so a big chunk of the work was already cut out for me. A more general Pico-8 converter might be possible in theory, but the scope would be massive, so I don’t see that happening anytime soon.