Is demon slayer weak? He seems to be packed with the most of the utilities one could ever desired (soft speed cap, 100% critical, exp and drop rate increment, ignore damage reflection, teleport, mobility, attack lines, self heal, tank, stance, status resistance, huge aoe mobbing skills, etc) and yet I don't see a large population of them (minus the botters). Is it because fund doesn't scale well with its damage output or something?