That's not really the question, though. It's about moving the needle more than any other possible replacement.
Not a comprehensive measurement by any means, but teams outside of AAC and P5 with more Reddit CFB subreddit flairs than UConn:
Notre Dame
BYU
Army
UAB
Boise St
Appalachian St
Georgia Southern
On the same tier (but slightly below UConn) for flairs:
Western Michigan
North Texas
Ohio
San Diego St
North Dakota St.
Since the question is "Who will have more hardcore football fans to sign up and pay money for an online/app streaming service for the games", CFB subreddit self-identifying flairs is a pretty good proxy. Casual fans are unlikely to pay and subscribe unless the team is very good. A few of these schools are definitely not options for the AAC, but this at least lines up with the seemingly-random Georgia Southern talk.
For reference and context, every single P5 team has more than us, and we're 7th in the AAC behind (in order) UCF, Houston, Cincy, USF, Navy, and Temple. Memphis is behind, but has been steadily gaining on us over the last 3 years and will likely pass us shortly.