I haven't seen the guy play so I don't have any opinion as to his skill level but the argument that he can't play P5 hoops because he is/was being recruited by ECU, Iona, Seton Hall etc. is a non-starter. Guys can develop later and a look at any NBA roster will more than prove that point.
For example: Norris Cole, Robert Covington, CJ McCollum, Andrew Nicholson, Matthew Delladova, Tony Snell, Jeremy Lin, Rodney Stuckey, George Hill, Courtney Lee, etc.
All played at non P5 schools and that is a fraction of the list.
Since a lot of the arguments are about who recruited him and where he ended up I thought I would share. Its not always where you start, its how you end up. A lot can change between 17 and 20 years old, for better or worse.
You did a lot of work, so I figured I'd see what I could find. Here goes:
Norris Cole (Cleveland St) 4.9 ppg FR, and 21.7ppg SR POY Horizon
Robert Covington (Tennessee St) 11.5ppg FR, and 17ppg SR
CJ McCollum (Lehigh) 19.1ppg Fr and POY Patriot, 23.9ppg SR POY Patriot
Andrew Nicholson (St. Bon) 12.5ppg FR, 18.5ppg SR POY A-10
Matthew Dellavadova (St Mary's) 12.1ppg FR, 15.5ppg SO POY WCC, 15.8 SR
Tony Snell (N. Mexico) 4.4ppg FR, 12.5ppg SR
Jeremy Lin (Harvard) 4.8ppg FR, 16.4ppg SR
Rodney Stuckey (E. Washington) 24.2ppg FR POY Big Sky, 24.6ppg SO
George Hill (IUPUI) 10.7ppg FR, 21.5ppg SR POY Summit
Courtney Lee (Western Kentucky) 14.9ppg FR, 20.4ppg SR POY Sun Belt
Stephen Curry (Davidson) 21.5ppg FR, 25.9ppg SO, 28.6ppg JR POY Southern Conference SO and JR years
So it looks like Norris Cole, Tony Snell and Jeremy Lin averaged single digits in their Freshman seasons and still made the NBA. The rest all averaged double figures.
No player listed above succeeded after a transfer in college.
What it all means... I don't know. But I don't think it gives Hughes the greatest odds. I'm holding firm that he's too big a gamble with the needs of the team (shooting), and scholarship reductions.