Fine, let us presume you are very active, but it doesn't change the fact that there are players who are very active in some fake arena what is completely different then the whole game. I mean it is the most safest place in the wasteland, nothing happens there except random skirmishes which could be fought in the actual game, wasteland, not fake arena.
Now that's a place where the player truly doesn't risk anything and get's free equipment to do what it is meant for.
I would understand that the feature would be reserved for some team tournaments, opened on special occasions for players to form teams and compete in the most balanced possible way, truly determining the best by battling it out for the sake of solid, clean competition.