I will say this about it, and I've tried to listen very hard to a lot of thoughts from people who are very reasonable. CDA, in particular, has had points that make me sit back and really think.
What I will say is that one of my kids is a little girl who attended her first game at age 7 (I hadn't gotten back to Missoula back then). She had only ever remembered on player's name before that (Sneed), but for some reason when she was little I told her what the number 37 stood for and why it was special for a player to wear it. At that first game, 37 went down and stayed down for a bit, and she her eyes never left him. She squeezed my hand and asked if he was okay, and she clapped when he certainly was okay. Every game since then, she has watched for 37, cheered for 37, and that little girl may have been the most excited person in the stadium when she saw 37 get raised up on the flag.
Honestly, I can't really tell you why it stuck in her little brain so much. But it did, and it has been something that captured her into Grizzly football and has helped give her the bug. For that, I'm forever grateful to that tradition. I've said many times that many of you are overthinking it if you think it is specific to where you are born, or specific to where you graduated. If a kid lived 18 years in MT, then his family moved the last semester of high school and he still came back to play for the Griz, he would be eligible for 37. There is no specific metric, just a tradition made by young men from a state they were proud of and to point to someone and say "hey, this guy is considered by us a Montana and stands for the Montana cultural values we hold dear." That is it, that is the entire requirement, and now that I have seen the effect it has on a little Montanan, I can admit to getting a little misty at the thought of what that has come to mean to generations of people.
Keep it, and maybe we should all just quiet let the 37's have it the way they have want it around the tradition they have built. Its the fans making drama around the number, not the players.