Unless I'm mistaken, Retribution is the smallest map in the game. I think it's way too small for a 6v6 match. Heck, it's probably too small for a 3v3 match, as well.
Why not just use some of the bigger maps? They're still in the game. You can pick them for Private Matches.
This map was clearly inspired by a donut.
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Gamblers Ruin would disagree