I would suggest having a weekly reward at the ranking board. In this way, the players would be much more motivated in aiming Top 1 at different types of ranking.
Dear Load.Thank you for your opinion !It looks more fun. I will send your opinion to our developers.and I'm not sure they accept your opinion but i will try to do it.so please understand us If it doesn't accept into game, quickly.and also please keep suggesting us ! If you use our CS then we can check your opinion more easily!best regard.