Could you convert F-35Bs to F-35As?
If there is extra fuselage space in the F-35Bs, surely you could hack out the VTOL engines and stick in the normal F135/F136 and use the extra space for more fuel or avionics? Then, when the MoD kill the program, the RAF can simply re-use these three "prototypes" by converting them back to A models or even trainers. Oops - did I say something to give old Fishface Paige some more ammo?
Can't say I'm too upset at the idea of the RAF getting more tranche 3 Typhoons rather than F-35A/Bs as then they would at least have more parts commonality between the ground-attack and interceptor squadrons, and probably be superior in the interceptor and long-range bomber roles. And it might even free up some cash to get the cannon operational in the older Typhoons again.
As regards the current Harrier GR9s, it has been shown time and time again that close support and many ground attack missions do not require a supersonic capability, just lots of loiter capability, lots of stores pylons, and a good sensor set for night ops. The GR7/9s have all these and could easily be developed to include a similar sensor fit as the F-35B, and probably at a lower price. The A-10 Warthog has long since been judged the best close-support jet in Afghanistan (and that judgement comes from the US troops on the ground), and our Army seem to prefer the Apache for their close support. Even more Longbow Apaches would be far cheaper than F-35s, even if they were built in the UK. And whilst stealth is great for penetrating high-tech enemy air defences and knocking out there C3 capability (including the radar) it looks like the RAF intend giving that job to the already pretty stealthy Typhoon anyway.
As for the F-35 dominating the jet fighter scene, most countries seem pretty happy buying even third-hand F-16s, and I've yet to see any real proof the F-35A would do better than an updated (and faster) F-16 model or even the current SuperHornet.