I actually really like the exotic despite the slow. I get the idea and everything but the one actual flaw with it is that you just get left behind in a lot of activities which just leads to like hesitance about using it in general and just makes the pace of the game worse and I don't think an exotic at times should be an active detriment. I understand there should be trade offs but I think I would like this one change. The idea would be that during the time when you have the shielded buff/debuff since Barrier recharge is disabled anyways replace it with an always ready detonate function that would essentially do the cast animation again but then deal damage equal to the remaining overshield hp to the enemies within the slow radius and applying more slow stacks (scaling up for pve enemies but in pvp it's 100 damage at most)