I'm not gonna get into a lot of detail here. I'll just say that Thieves Den and Rift is literally the worst map to game type combination I've ever seen in this game, and that includes Bastion and First Light on Clash in the early days post-release and during the Beta.
Those corners are way~ too sharp and the corridors are tighter than... well, probably can't say that here. Must be a Shotgunner's wet dream though, being incentivized to camp and all.
Discuss, if it suits you.
[spoiler]The salt is real. I'll accept that.[/spoiler]
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If argue frontier. Lots of open space with a choke point for the rift drop.