Honestly we don’t need bosses in Epic BGs just some better objectives. Tanks role is to be on the front lines dictating the battle either stopping a push or advancing. I would love to remove the Bosses in AV and have Epic fights over Towers. So we get a fun AV with 100’s of HKs.
There is no PvP without Tanks it just would be really weird to not have such an Iconic roll on the front lines protecting Dps/Healer and dishing out dmg/healing.