Realistically, I look at Gilbert making a difference (by difference I mean a chance to win) in the following games:
Syracuse, Wichita (H), 2 Tulsa games, UCF, Cincy (H), Arizons, and Memphis (H). Remember Arizona was a 2 point game with 6:00 left. Lets say Uconn wins both Tulsa games, the UCF game, and one each of 'Cuse/Memphis and Wich/Cincy. That is 5 more wins and currently 19-11 with 4 -5 of those wins being in conference, so 11-6 0r 12-5 in conference. That would have been about the expectations if you told me that Larrier was not going to come close to expectations. I would suspect that a true playmaker at PG would have limited several of the huge early deficits that UConn faced in many games when teams focused on Adams and Uconn didn't know which Larrier or Adams was going to show up.
The bottomline is nobody knows where this team could have gone with a healthy Gilbert and a win against Syracuse, maybe Arizona, playing Wichita St. tougher at home, and beating Tulsa. A 4-1 start to the conference schedule would have been a confidence builder. I do think Gilbert would have enhanced the development of the youngsters in the middle. It may have ended up being an NIT team, but it would have been a team with a defined path forward.