The only time I esuna is cleansable doom, paralysis or very high damage dots like concussion or hefty bleeds, which are mostly avoidable. How many duties are there with those things? 10 tops? Usually paralysis is actually avoidable too so if you ignore an AoE and get it I have little remorse for you.

My issue is constantly swapping role skills would be a pain so you should be able to register them to your gearsets for convenience.

Besides....aren't cross role skills interchangeable mid duty and no longer have a CD penalty? ./shrug