Not that it matters, and it might just be that I'm getting crotchety as I approach 1/2 a 100, but I will renew my disdain for #0 and #1 (Numbers only, not the players wearing them). I'm also on record for preferring not to double up on numbers. 85 players. UConn has not retired any numbers. That's 99 from which to choose.
OTOH, I do like when players choose non-traditional numbers for their position. A defensive lineman wearing #8, or a linebacker wearing #33 is perfectly acceptable. Marcus Easley wearing #29? Have at it. I've also been a long time fan of the Matt Rhule custom of assigning single digits to Non-OL captains and/or upperclassman as a reward for toughness, performance, and leadership, as voted upon by the players. I'm pretty sure other coaches do it too. I just associate it with Rhule from his Temple days.
#6 should always go to a player in the defensive secondary, IMO, but it's been nearly a generation and six coaches (Pasqualoni, Weist, Diaco, Edsall, Mora, and now Castle) removed since Howard passed away. It is what it is. With the monument under the scoreboard, it's just not that meaningful to current day players. Particularly for short term transfers.