I'm not actually following, you mean like bingo cards? Or diving threads of a post up into groups of prompts? Or...?

it'd all be people who have agreed to participate and easier to keep track of, maybe? Sorry, but you made me laugh a lot just then because lol, like, oh, say, the small number of 54 who signed up to do Secret Santa? That turned into pinch hitters on top of that and a graphics gang and community treats? :D