I don't think it'd be an issue. MSQ roulette duties used to be 8-man, now they're 4-man and one of them is a trial while 2 are dungeons. It looks like if there are any limitations, they come from SE not wanting to do too much mixing up unless it's necessary? Though I can imagine CT raids would struggle more to fill since it'd be easier for the game to sort everyone into multiple Porta Decumanas than one Labyrinth of the Ancients. rip sprouts queueing for this stuff.