User blog comment:Battlemaster Grunt/What is the best Mass Effect? 1,2, or 3?/@comment-4125114-20120930210556/@comment-5261836-20121001121949

There was way more interaction with squadmates, Bioware actually said that they were aiming for better interaction and depth with the NPC's and they achieved that. Also the side missions offered variety and awesome cameos by previous squadmates, especially Grunts mission.