Before advancing to your unique thinking. First we need to fix the loop holes and issues in the PVP namely:

1) Fair Team balance like 1vs1, 2vs2, 3vs3, 4vs4, 5vs5
2) Inactivity (Keeping alt in enemy team) 3) Spectator Mode,
4) Practice Arena,
5) New power combos
6) Flag Glitch
7) Spawn kill Glitch
8) Offensive comments

If anything missing issues... plz comment and this issues must need to resolved in the PvP arena.