Our LS has never demanded a specific job for anyone on anything. To be honest I'd say it's come to be one of our core values in XIV, "play what class you want and win having fun". We speedran darkhold with melee (our first ogre kill had 1 arc, 1 conj, 1 thm), used PGL on ifrit, melee Moogles and currently we're working on the 5th chests in the new dungeons with whatever classes people want. We obviously structure the group in the sense we have a tank and a couple whms, outside of that? Whatever you want.

Class stacking is not a dev problem, it's a playerbase problem, they're fucking lazy and want rewards ASAP, so they default to strat they know that works (or the one that doctor mog told them lol).

And then they moan about it. Nice one.