Being completely honest, I can get behind the Devastator playstyle, its giving up 25% HP from Indomitable that is sort of an issue for me.
I don't see any reason Devastator is on out level 75 tier. It makes far more sense to have it replace Ultimatum.
For that matter, Best Served Cold should not be re-tuned into a DPS talent. It would make far more sense to keep it right where it is and turn it into something like "Revenge increases the maximum effect of your next Ignore Pain by X% per target hit, up to 5." The level 75 tier is a survival choice tier, why is there a DPS talent on it now. >.>