Great Dane have some pretty long E jet routes. I wonder if T3 would be interested in establishing them at MME? I could certainly see LCY and DUB, possibly BHD going E190 and bringing fares down. They have the legs for the Canaries, Tunisia, Greece, Turkey and Cyprus out of Chubby Brown Intl. So if they're big and brave and sign on with a travel agent to assist sales it could just pay off for them.
I'd suggest they might need a larger fleet to commit to SOU, but it would be great to see it come back to life, as well as the other airports that died with Flybe.
Now is not the time, but if Eastern, Logan, Aurigny, Stobart and Blue Islands play their cards right and carve their niches, once covid-19 is no longer a consideration there might be a platform for regional growth.