BFS or BHD won't work with Eastern I don't think.....
Only routes that I could see working are:
BRS/NQY joint with Air Southwest - not sure they would take this on, with them serving LBA and MAN also, though?
Rome - as others have said, possibly one for GSM to look at, 3 or 4 times a week would suffice
Madrid - 2 or 3 times a week, possibly one for Ryanair to look at with their new Madrid base
Geneva - hopefully GSM will take this on in the winter, or maybe Chambery/Lyon/Grenoble. Also note we will have a weekly CMF with TOMfly!
And some notes on current routes....
Heathrow - we need bmi to look at the times of this, different times (early departure to LHR around 0600-0630) - although things are starting to look up for them. They could push Heathrow transfers a bit more (eg to Middle East) and maybe their new partnership (soon?) with Bmed may allow them to do this.
Amsterdam - KLM look to be doing very well indeed on this route, and as previously said they are adding a 4th daily for the first half of the summer, presumably as some sort of test.
Aberdeen - this route is going from strength to strength and is a prime candidate for upgrade to Saab 2000, or a 5th daily flight. Surely a Saturday flight could be introduced on this route.
Brussels - seems to be doing ok, but I really can't see this lasting past the end of next summer