All I know is back in the day UNC was pretty good in baseball, even made the college world series a few times, and I'm talking way back in day. But like Beardown said, baseball doesn't get a whole lot of support, fan or money wise. Even though Jackson field is one of the better ball parks in the state, in my opinion. They have struggled since the move up to D1, but have beat some quality teams.
Ya its crazy that CU or CSU don't have baseball teams, I don't know if CU ever did, but I think CSU did back in the day. UNC and Air Force are the only D1 programs in the state. There's 3 D2 programs, and handful JUCO programs as well. I agree the baseball talent in northern Colorado is real good, and its like that throughout the state.
As far as how good UNC will be this year, I'm not sure, I know last year they were really young. They started a bunch of freshman. About the Great West conference, I think its the first year for this conference in baseball, here's the link if you haven't already fount it: http://www.greatwestconference.org/sports/m-basebl/gwfc-m-basebl-body.html From what I have looked at, this conference is going to be pretty weak, and I think UNC could be top 3.