I would be interested to see both the Tank and DPS stances be streamlined in to cross role actions so essentially every tank has the same access (from lower levels as well), but each tank has traits that activate depending on the stance that is in use. So Sword Oath/Deliverance Traits would activate for DPS stance and Shield/Defiance/Grit Traits for Tank stance. The traits would also keep the old animations for each job so you would still see WAR pounding it's chest or DRK powering up Grit etc, and it would also activate any ongoing effects like damage reduction or maximum HP increase.

Essentially cross rolling the stances gives more free actions to the actual tank jobs for more unique means of handling a fight, whether its some new single or aoe attack, or some special cooldown showing off a specific tank identity even more. Although as a whole Emnity needs to be looked at, as it's currently a bit too easy to pull in Tank but then switch to DPS stance.