Correct me if I'm wrong but Thomson serve Florida quite well all the year round so my guess is that there is no need for a flag carrier on that route.
HS2
Of course PK is working on the theory that everyone will come flocking to BHX to fly out on their limited route structure. Great bring HS2 on I'll go the other way Birmingham to LHR now there's a thought - 45 mins and the world is yours. LHR will love it. Great Marketing ploy there.