Title self explanatory: The ability to spend your goobcoin to unlock a time-locked trinket or clothing item without meeting the requirements. Would probably have to be a relatively high amount, but it would be useful for people with no intent to play certain roles who really want a specific cosmetic, and it'd also provide a meaningful ingame use for goobcoin for people who don't have any interest in playing antag.
and because, yes, obviously this is a feature i'd use, i'll give my own usecase as an example- i have no plans to play research director. That amount of responsibility doesn't sound like a fun time for me. However, starting the game with a PAI would work very well with one of the characters i play, i just... y'know, i'd have to play research director.