Let's be honest here: the majority of most DF Prae/CM groups are people queued in from roulettes looking for that six-digit XP for 15 minutes of work, myself included. If I somehow get into a group with more than 4 new people wanting cutscenes then yeah, I kind of have to wait for them, otherwise I'm speeding through that stuff because I'm just there for the roulette rewards.
It's an unfortunate scenario but it's basically either subjecting new players to long queue times or increasing the player pool and speeding DF times with roulette rewards.
311k exp at 59 from a CM. Even if it's not better exp/time than Library it's a nice break from it.