i don't like the beyond 30 leveling up, full champions

greetings everyone. i've got a big problem with this new beyond 30 leveling up, the problem is : the rewards. i don't really consider them as rewards to be honest. why ? because i have all the champions ! why would i go for leveling up if i have all of them ? and all what i get is champion shards that i already have . (and i know about the special emotes on level 50 ... but meh, they are useless) so, will there be anything special for people like me ? or do i just need to watch people gaining champions while i have nothing added from these levels ?