vanguards adrenaline rush nerf should be reverted

I feel as though the nerf on vanguards adrenaline rush ( heal 5% when performing a finisher on a majoris class enemy) was not necessary, at least for the reasons the note provides. Nerfing a class to be more reliant on the safety of the team is not fun. Also, if you are effective with any class to the point of being capable of soloing the entire mission and abandoning the team, that is not something that a nerf should fix as that is a player specific issue.
vanguard is also very squishy. as in, he will quickly start receiving health damage because he lacks alot of shields that other melee centered classes have. so for him to be able to pick up 10% health from finishing majoris class enemies would make this class more viable, considering he is a melee to close range class. I think vanguard is meant to distract enemies first thing considering he has a grappling hook, so he will more often than not immediately throw himself into the enemy.
maybe this nerf happened to make unmatched zeal (heal for 20% for finishing terminus and extremis level enemies) more appealing. but the issue with this upgrade is that it requires a bit more coordination from the team, and hoping that no one gets greedy and takes the finisher when they don't need it. its very effective if used by a very well coordinated team, but its gonna be difficult to do that in public lobbies. its also too reliant on difficulty as more boss-like enemies show up on harder difficulties. the other team buffs are more consistent so i can pull finishers a lot more liberally.