I want this too, but it'd be billions of dollars in development, and if the F-35s cost 90 mil each, I can't see how we're going to have more than a handful operational geese. Also, we don't have a carrier for them, so they'd just go to waste. I can't even imagine how long it would take for Canada to develop a 6th generation fighter that will be better than whatever the USA comes up with. The Russian Su35 and Chinese J20s are both 5th generation and behind the F35 by a noticeable margin. Not to ego boost the USA military, but they do have the best most experienced engineers.