hey there! FIST also takes a lot of inspiration from OSR games and their "rulings over rules" playstyle, so edge cases or complex actions are meant to be up to either the GM's judgement or, ideally, the judgement of everyone at the table! that said, there's no reason FIST can't be hacked to include pbta style moves (traits are basically just simplified moves with some bonuses tacked on, so maybe a pool of generic traits players could choose from?)
if you do end up making a move sheet and you post it somewhere, I'll signal boost it in the devlog!