Actively trying to complete Castrum for a few days and this last pop we had 16 people signed up, up until another critical engagement appeared and everyone withdrew because that's so much more profitable than helping a late-comer clear mandatory quest progression content. They're all happily farming coins outside the dungeon much more efficiently, why the hell would they bother?

I can not believe that Square Enix doesn't have some statistics somewhere that show that out of 100 pops of the instance, around 99 haven't even been attempted and the remaining 1% failed for lack of participants. Surely they can look up the actual figures on their server data somehow. It's insane.