I feel that subtracting Verraise from the RDM takes away a lot of their personality, but I agree with the structural problems that caster raise causes.
In my eyes, a sensible solution would be to just make it very situational and give a 180s recast time. This way it becomes more of a job perk rather than a defining identity element that ends up being problematic.
Summoner's Ressurection could get a similar treatment of 180s recast, with the caveat that is only available during the Phoenix phase.