The fact that you get absolutely no progress after hitting Legend if you lose a game is disheartening. There's no reason that players should be punished for a bad matchmaking system in a gamemode that's gotten absolutely no follow-on support since Gambit and Prime were consilidated into this bastardization
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Jus grind the bountys. Guaranteed progress. Yea, it may hinder the team if solos, but hey, you didn't make the rules 😉