The thing is outside of progress a RDM should be doing all they can to avoid using Verraise anyway to maximize their DPD output. Literally every single Raise is a DPS loss but even in a progression situation, if you keep having to churn out Rezzes then it's unlikely you will clear the content to begin with (due to Enrage). I wouldn't say RDM is the best at Rezzing, but rather it can often be the best at making bad decisions and wasting MP too prematurely or unnecessarily. What can a RDM do that has next to no MP, pretty much nothing, not even any DOTs to assist it.

RDM could benefit having a little more DPS output to cover periods when they can't do anything, i.e. they are moving to avoid aoes and their instacasts are on cooldown. Even BLM which despises having to relocate itself actually can still do stuff whether it's through the Thunder DOT, Firestarter or Thundercloud processes, Scathe, and both Swift and Triplecast that are each on 60sec cd. Plus Aetherial and Between the Lines help them control the field quite nicely.