Maybe you should try and use ninjas that does not cost high in zenith since you're more likely to get initiative 3/5 of the matches. I mean people like you who don't understand this and decide to run water main shark are very easy to beat.

It's probably that there would be too many people in the finals you are suggesting and the rewards would not be that great. Coupons most likely won't hit the 1k mark which would decrease motivation for people to try in zenith.