a shotgun i would love to see in the game would be the Auto-assault12. its one of the best shotguns in the world. also the capabilty's it has to use different ammo types fits in perfectly with what they're trying to do in this new fallout.
It's actually the ultimate tactical combat shotgun - full auto fire, and can shoot a freakin' GRENADE farther than a .22 rifle can shoot. Oh yeah and it can auto-fire grenades as easily as regular ammo.