the problem is not his DPS class, but at this point , low level story dungeons are already deserted
the game's been out for 2 months, and the majority of players are already at endgame or on their 30-50 (casuals)

in open world, low level players are still scattered everywhere, but they rarely do low level dungeons, FATE is the way to go
we need new players to do story dungeons, not people who are leveling their sub classes