Seriously, SSSETOWTF, I agree that you could paint any markings you like on an LRIP and get the UK to pay for it.
No, I don't think that it would be a "go-to-war" airplane, and neither (apparently) does Adm Venlet. Hence the actions taken in TBR. Certainly, the USAF appears to be definite in its views of what it takes to declare IOC.
Your comments reflect the attitude of many JSF supporters. Having oversold their ability to deliver, and underbid the price - that is fact, not opinion - they are now arguing that there is no alternative and the punters have no option but to cough up - "I don't think the F-35 unit cost is ever going to exceed the annual UK tax intake" - or see the money spent so far go to waste.
That strikes me as more than a little arrogant.