I don't think there's anything fundamentally wrong with RDM, it's mostly just their numbers are overtuned for what the rest of their kit offers.
Similarly, I don't think there's anything wrong with WAR by itself (MAYBE a bit too much damage for a tank?), WAR is the baseline of where the other tanks should be at in terms of CC and utility imo. WAR seems strong because the other tanks are weak.

Now WHM? Yeah, that is the one that makes me scratch my head and wonder if their team playtested it. No healer should ever be brought up to that level. Just look at that monstrosity of a LB alone. Did they just run out of things to tack onto an instant cast AOE CC nuke that they had to add in all that regeneration and damage/healing amp to the fastest charging LB? Never mind the rest of their kit (yay, un-cleansable hard CC).