Dave Lee may be a great guy, and may love doing Gopher football games, but that doesn't mean he is a good announcer. He doesn't convey key information, and that's the #1 job of an announcer. There are people doing play-by-play for the radio out in the sticks who may not be great announcers, but they convey the key information. With Dave Lee, you're often not sure if a pass was caught or dropped, or how many yards a play gained. He forgets to tell us.
If you have a radio with you at the stadium, not such a big thing, because it is then supplemental. But if you're in the car listening to the game, it's all you have to go on. I find myself listening for crowd noise to figure it out. I don't have anything against the guy personally. If he could work on some things and fix them, then I'd be fine with it. Maybe he should sit get some DVDs of games, turn the sound off, and practive doing play-by-play. Focus on the key elements: what down is it? how many yards to go? Is it a pass or a run? If a pass, is it complete or incomplete? If a run, how many yards did it gain, and how many more are needed for a first down?
These are the things that are an absolute minimum for a play-by-play announcer.