Truthfully I think the F-35 is at least as ready for WWIII as the P-39 and P-40 were for WWII - now that's a scary thought:)
Having watched NATO's response to Russia's actions in Georgia, the Crimea, and the Ukraine; I am left with the feeling that this organization while making many feel more secure is really a paper...
You want to replace the electronics, re-skin the fuselage, and redo the wings again? There won't even be any money left for new engines. And, when you are done you still have a 60...
Where were the components in the computer you are posting from made?
I would tend to agree that Canada has no clear mission for the F-35 that could not be done less expensively by other aircraft currently on the market.