Ekko's weak/outdated state

So I was playing Ekko yesterday and I noticed that he didn't have any % max health true damage.That must be fixed. I recommend to change his passive and his w pasive to do that. 1 ring of Ekko's passive=10% max health true damage.The passive proc= 90% max hp true damage.And each hit from his w passive= 20% max hp true damage.I think this will make him fit the game more since he got released before the % max hp true damage trend.