A had this same question before 1.18, and now the question warrants a real response.

MRD no longer is an AoE Tank or DD
MRD is not the highest Defense tank
MRD is not an evasion tank
MRD is the slowest at getting TP, and now worse with recast on Full and Broad Swing
MRD has no party supprt abilities
MRD has the lowest MP pool
MRD has the lowest accuracy weapons
MRD does not have the highest dmg weapons


MRD gets a taunt with a 2 minute recast (Warmonger)
MRD trademark ability Bloodbath is near worthless in real combat, unlike Second Wind
Maim was nerf'd and now its effect is hardly noticeable vs NMs
Murderous Intent is still broken
Barbaric Yelp is still broken
If you were to get Disorient to stack 3 times you would have wasted your dps time, unlike Life Surge or Concussive Blow


So what are we left with?
If you want a tank, get a GLA
If you want a DD, get an ARC
If you want party support, get a LNC

And if you want a high HP, low dps, low accuracy, low TP gain job, then you've found a way to get 9 people in your party....