In my opinion the elo system does nothing good for the game. It only creates an even more toxic environment. Like Skilly is saying, it should be removed. For now at least.
Elo or tiers can be brought back when ladder releases. Where u can play normal ladder AND glad ladder separately and earn elo depending on what mode you play. If you decide to go to training mode or a different mode in the free channel it will show your elo or tier on the last ladder mode you played.