It seems like the biggest challenge that UCONN faces regarding attendance is getting the students to buy into attending games off campus. Most P5/G5 Schools with off campus facilities face similar issues. I'm not sure there is a simple solution to this problem. Short of consistently winning a ton of games, it will never be easy to get college kids to commit to catching rides or taking a bus to arrive on time for pregame activities.
All the program can do is continue to build itself back up, and hope that fan interest follows. Obviously inclusion in P5 Conference would jump start everything. I've read the various threads about this topic on this site, and a lot of what you already have seems pretty good to me. Good sight lines, ample tailgating areas, reasonable traffic, good concessions and beer selections, and more than reasonably priced tickets, are all good selling points. From reading it sounds like they need work on game day presentation. Band programs are a bit understated, PA is annoying, DJ sucks etc. Those seem to be reasonably easy fixes. The bigger fix is obviously winning. Win more and people will want to be part of the event.