About 4 or so months back I was flying into CLE with the #1 FA who's been here for 15yrs. Maybe 16 now. She knows everyone in the company. We were going through the terminal when we ran into one of the guys that's in charge of basing. keep in mind this was a few months ago and I've heard nothing of it since but we asked him when CLE was going to be a base. He said, "For us to make CLE a base would require us to shut down LGA most likely". Having been CMH based I never knew we flew CAL into LGA until that point. I had only done Delta.