Get maps that aren't [b][i]have maps that aren't the tightest corridors ever![/i][/b]. I don't remember shotguns being a big problems in combined arms. Only thing that needs a nerf are the grenade launchers, those do way too much damage. And the high impact have a bit too much range, maybe nerf that, but I wouldn't say it'd fix things. But gees, have some maps that aren't cramped.