Hmm that is interesting, I wouldn't rule it out especially considering some of their other moves. It could be a little hit at BE again as they did on the IOM and JER routes.
How many stands are there at Exeter? Currently there is 1 mail a/c that to my knowledge is flying at night so parked up during the day. There are between 3 and 4 nightstoppers from BE and the 1 TOM. I am sure that the airport would find space for a potential new carrier, maybe by moving the mail a/c over to where engine testing takes place (sometimes it is parked there anyway)
There was a time when not only did we have the TOM, but 3 Q400s and 2 Embraers so there must be some room?