1, To summon the brutes you have to do pve content in primarily pvp based gameplay. It is boring.
2, The brutes are too over powered. Whoever gets the brute or worse both brutes on a point have a massive advantage due to
2.1. the brutes huge aoe pull that stacks any player in the aoe to the brute.
2.2. the balls hitting easily for 50% - 70% HP of lightly armored players.
2.3. While these can be dodged sometimes, you cant dodge if the brute is behind you and cant see it.
2.4 brutes spamming the balls into the point.
2.5. The brutes having too big of an HP pool to the point the brutes are not worth attempting to kill most of the time.
2.6. Sometimes the brutes jump on you and do 2, 3 staggering attacks making this a one shot with no counter play if you havent managed to dodged the first hit.
2.7. The frequency of the cc from brutes is just frustrating.
3, Brutes are boring. I come to OPR to pvp, not pve.
4, FIghts around the brutes can be decided by an unlucky intervention from the brute instead of skill based pvp play.
5, What to do about it?
The brutes need to be harder to get, faster to kill, or have less impact on the enemy team, especially the cc.
Remove all the NPC summons. I personally dont see any good way of balancing this. The summons will be either too strong and frustrating to pvp or too weak and not worth getting them. Maybe they can work if you add some interesting mechanics that work well within the pvp but I am sceptical.
In any case, I also suggest the NPC summons should be entirely removed at least as a hotfix for the brute meta which makes the game frustrating and unenjoyable.