There were rumors 10-15 years ago of 97.1 flipping to country. Didn’t happen then, probably won’t happen now. I realize you probably don't think it's very likely either, even if it is more likely than a flip to urban.
People didn’t like it, or at least not enough liked it. That's why it went away in the first place. If the market had enough people like you who had a passion for the station, it would still be here. Besides, seems that train has already left the station with KVIL making changes to sound more active rock.
DFW isn't Tampa Bay, Cincinnati, or Cleveland. The 25-54 white male isn't as large of a population segment. Plus, the rock format has been contracting for years anyway. Remember Q102? It's been gone 25 years now. The Zoo has been gone over 30; in fact, it'll be 35 this time next year. The Edge went away, and that didn’t help KEGL long-term. How many rock-based formats does DFW have today? Two? That's half as many as it had 30 years ago, and the market has roughly 20 more stations now.
Neither of those changes is likely to happen. Neither is a flip back to rock anytime soon.