I think it would be nice if we are an official page with all winners (place 1 2 3 in each mode) of the events with score. A kind of “Hall of fame”.
I do not like reward system (to good) but I like your idea. I think this could be nice feature. Vote from me
Rewards Should be something like say 100 gems for becoming leaderboard leader, or level based rewards making if fairer across different board, or a monthly cup goal say something like, win 500cups over your current amount this month and win 100 gems.
This would be at least a goal towards playing raids and reason to win cups not making them a useless achievement as they are no.
All these options would encourage players to play more and it would also then make uour wall of fame a need/want to be list.