I suppose the best we could hope for when the runway is complete are Chinese freighters bring in parts for MG at Longbridge. Maybe the Premier's visit was worth while after all.
With the way things are at the moment and given OP's CAA stats I can't see any expansion for Pax routes for the foreseeable future. If EK figures drop any further we may be back to 1 flight a day. (May be a A380) would fit the bill)
The only expansion on the horizon at BHX are more and more shops. Any guesses whose next? Primark? Matalan? TK Max?