I'm currently mostly working on GeDoSaTo, but if you want to implement it go ahead. PtBi is on GitHub.LOL that's exactly what I meant.
Ideally it would only need to be made once per game, and users could share masks online once they've made them.
So is it something you'd be interested in implementing?
Or perhaps someone else could implement it?
(I wouldn't mind trying)
It would also allow making before/after comparisons within the same frame