AOE sustain on warrior just isn't fun IMO, fully healing yourself 4 times in a row in AOE cannot be balanced, unless we reduced the potency which then would make it bad for raids. I'd actually enjoy warrior in aoe more if it wasn't like that personally, Yeah again it's dungeons but dungeons shouldn't teach players that you can afk the tanks going to do all the healing in the pulls.
I hope you get where im coming from at least though, Like I can get why people might find it fun, but I think it takes too much from healers currently.
Bloodbath would actually make a interesting role action for tanks (aslong as it worked for drk too, as it doesn't work with magic attacks) as Bloodbath really isn't that strong potency wise, don't actually get why it's designed for melees now? like bloodbath makes way more sense as a tank tool.