Gears of War 3 - end of the road for delta squad..?

Gears of War was one of the first games I played on my XBOX 360.  That game got me back into shooters, and eventually back into FPS games.  The cover system was new back then, and it was an interesting element to the game.  Fast forward to 2011, and we are at the third game of the trilogy.  I enjoyed the story in the first two games, so the third one was a must buy.  I knew that I wouldn't be getting into the competitive multiplayer side since its so dominated by the shotguns, which sadly still is the case today.  But I knew I'd still play the campaign at least twice, and do a lot of horde mode.