For better or worst, FEAST is the "competitive" PvP mode in the game. There is no way to effectively manage 72 players, which is why I think they are changing Frontlines next patch to have fewer players. I was listening to somebody talk about it, but I didn't watch the live letter since I'm still in the middle of Shadowbringers and don't wan't to be spoiled by anything.
I have 8 more wins before I'm done with GARO mounts, and have found that it's not even worth doing more than one frontline. Even with the advantage of being on the right team you still lose often enough to dumb stuff that you can't really predict the outcome.
On the plus Shadowbringers has been excellent so far.
It's the other way around, I believe. They're getting rid of 24 player, so it'll only be 74 players.