Typically in games when a boss enrages it makes the fight harder not easier. I think the T2 enrage wasn't designed for people to wait 5-6 extra min just so they can fight the boss while under enrage. Something should be fixed. It was an oversight when they made the boss that people would actually do this.

If its going to be a soft enrage ADS should still should do all its mechanics even while enraged on top of the pulse damage. There is a soft enrage on T4 as well if you take too long, however if you get to the soft T4 enrage it is pulse damage the enemies you still have left up do all their normal mechanics and moves still.

If its going to be a hard enrage it should just blow up and kill everyone with 99999 damage.