I -blam!-ing love this game type, and I'd love to see it become a permanent fixture in the line up.
No radar, no heavy, delayed special. I find it so liberating and unpredictable. Really tests your map awareness, and you can get such tasty flanks. Sure, you get surprise shotgun -blam!- from time to time, but when can't you regardless of mode.
It would also be great if these were changes made to Iron Banner. For something billed in-game as a test of skill, the things that require the least amount of it tend to be biggest factor for most Iron Banner matches. I also think these things could help curb instances of blow-outs when going up against six man teams.
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Inferno is great!