DRG is much stronger than you realize OP.
1. DRG is actually second or third best DPS in ideal conditions against single target situations, and in real fights it carries over well unlike MNK/BLM who depending on the fight can lose a lot of their effectiveness.
2. DRG is great in dungeons, their AoE is very strong, and their multi-DoTs are extremely worthwhile.
3. DRG rapes adds, badly. Use Elusive Jump or Spineshatter Dive to get to the opponent if being melee has you getting beat by ranged, and when you're there, between all the off-GCD attacks and B4B's effectiveness during its duration, DRG can be #1 in burst.