Mainline will stay in Dayton til they make at-least their 76 Million back, if not more. I see them being here for 5 years minimum with that kind of budget.
Fly is actually doing well, it was a well thought out, well researched and well programmed Adult Hits station. Some owner could come in and change it back because he wants to win the blue ribbon for the prettiest radio station in town, but his investors would sure hang him from the biggest building downtown if he even thought of that!
My best bets are...
WDKF/WDSJ are sold to a newcomer
WDSJ swaps frequencies with WOKL (50,000 WATTS - K-love would be happy)
Owner now has 94.5 and 96.9
Smooth Jazz moves to 94.5
A new Adult AC "Modern Mix" pops up on 96.9
Eh, but this is just my guess.