I just find myself using shotguns and going for shotgun builds more than I do chaingun builds. That could change, but shotguns will always remain viable in my eyes.
This is my 'problem' exactly, which is why I launched this thread.
The way I set it up is with my wait time set to a high number, I find a good position and just wait for them to come to me.
Don't you lose a lot of med packs/armors/phases/etc?