At the risk of coming across as too negative (and I have been negative out of frustration in the past), I would simply suggest that Coach Cronin needs to establish his identity for the program. He was an assistant under two strong-willed coaches that had solid, well-defined identities for their respective programs, which attracted the types of players that fit the program's profile.
I can imagine it's hard for a recruit to really get a bead on UC based on what we've seen on the court. For whatever reason, Mick hasn't been able to put his stamp on the program...and I would argue that a great coach can do that without having the best players. Are they a tough, physical, grind-it-out team? Are they a team that accentuates great guard play in a drive and kick system? 5 man open post? Full court man to man pressure?
Honestly I think Mick has felt some pressure to get UC back to great heights quickly, along with the crucible of the Big East, and has over-thought things to some degree. Maybe the pressure of rebuilding his dream job from the ground up has worn on him...and the first few losing seasons have lessened his confidence. He's second guessing himself at times, and it manifests itself in his players and on the court. That's not to say he can't get it done - I believe he can. But he has to be himself, pick a system he feels comfortable with and go for it. Once he does that, and the team implements that style on the court, greater success will come and recruits will be attracted to it.
I'm hoping he can get it done, and believe he can.