Why does battle high exist?

[Aiph]

After playing more matches, I feel like the intent of battle high was to give a dominant team a fighting chance if the other teams wise up and decide to gang up on them. The key issue is the "if" part, though.

The fact that's there's nothing enforcing how much of a given job type is on each team is another problem as I find the battle highs tend to spiral out of control on those teams that are packing three or more healers in each party which make all but the most vicious attempts at focus-firing futile. Even if your overall DPS output is lower from having more healers the sheer amount of burst a bunch of LB-spamming melee players can put out is a lot more game-changing when they can easily focus down a healer on their own if they're packing battle high.

Would be funny if your role is randomized (queue only effects what the XP goes on) so that all party compositions are about the same (2 tanks, 2 healers, 4 DD) but you better know how to play your job!