Only way I can see it is if Beshear is on the ticket or they have a WV Coal democrat like Manchin/Tomblin/Justice. Otherwise it'll be a safe GOP win. Maybe if Kentucky goes more diverse or starts to take in cosmopolitan characteristics of NC & GA, it will work. Still doubtful at best.
Where is this idea that all cosmopolitan growth will forever spell more Democratic strength? There are some characteristics of "cosmopolitan" that point to Democratic voting (diverse, urban), but there are others that point to Republican voting (affluent).