Braxis Holdout is being exploited in comp with a simple maneuver. You ditch your tank & bruiser and add 2 lane specialized characters. If the other team is not doing the same the game is lost.
Objective becomes optional as you push lanes with the laners and then overwhelm with objective to ultimately finish with camps and one final boss. The map can be done in 3-8 minutes max.
My point is that since main development has ended and blizzard can’t afford a balance patch on this map, they can at least remove it from comp as it can come back to back depending on chance.