So I have noticed that we have an Arena to prove your strength, but it has limited attempts and is not an event.
I would like to suggest a 1 on 1 PvP event, where avatars can duel, divided by B.R., classes, skills, or stats. Winners move onto other rounds, everyone gets rewards or compensation. We can all get points, 10 or 5, which can be used to buy useful items like enhancement stones or emblems.
I think for this to last about 30 minutes is a good time.