I think this is more an issue with how mind-numbing and annoying it is to have 95% of your skills walled off if you go to something like the starter dungeon trio than the roulette itself. It really is, too. Hell, you can literally set a follow target and AFK an entire run in one of those as a scholar (a friend has done that when I leveled lancer a bit); there's THAT little to do. You probably don't mind quite as much when you're on your first class, but when you're used to all the stuff you have at lv50 or 60 and with many people multiples at one or the other...it's kinda painful.