DRGs are not too weak and don't need a dps buff, all they need is a slight rework in their skills to make them more usable (see: feint, k flurry, RoT, jump, PS, elusive, x-class?). Also, yes to mdef.

A decent drg will tell you that the "incredibly complex" rotation is useless in actual battle. Drgs use a very manageable priority system.

Here are the facts:
  • Drgs need 2 compulsory positionals to hit optimal dps and suffer a large penalty for missing them, while mnks have 4 non-compulsory positionals and suffer a comparatively smaller penalty for missing them.
  • Drgs enjoy a faster ramp up, while mnks' ramp up is slower.
  • Drgs have good burst, mnks have good sustained.
  • Therefore in a high disconnect fight, drg>mnk; in a low dc fight, mnk>drg.

This shows that different fights favor different classes. Acknowledge this and don't be concerned about being top dps. Enjoy the job for the challenges in playing it optimally, don't let ego get in the way.