Well, there are a couple important issues with the WRBE idea...
First, there really isn't as much incentive as one might think for WYCL to increase back to 100 kW, assuming it could. It's just another 3 dB of field strength -- hardly noticeable at all.
But, the larger issue is the 106.9 move. If I understand the scenario laid out, 106.9 moves south to beautiful Jackson County and upgrades. Let's say that 106.9 wants to be a C2. The problem? KKND near New Orleans, a C1 on 106.7. First adjacent spacing is 158 km, or 98 miles. Ain't gonna fit, at least not if you have the transmitter close enough to Biloxi to matter. And, remember, 106.9 needs to clear WYCL by 55 miles (2nd adjacent C0-to-C2).
A C3? 'Not sure it's worth the trouble.
I am sure there are other challenges, but that one is a likely deal buster.
I'm just sayin'...
DE