Motive: It can be hard to judge a player’s actual ELO if they don’t play enough ranked games to get into a proper ELO range. Having more players be at their actual ELO ratings can lead to better matchmaking, thus improving player satisfaction with more evenly skilled matches.
How: Incentivize players to play more ranked games with challenges if play or win X amount of ranked marches.
Reward: Unlock unique explorer skins
Outcome: More satisfying ranked games where ELO ratings aren’t crazy off, and better assessment of skill in casual lobby matchmaking