I think the F-16 would have been a good bird for Canada's needs. The F-18 had the advantage of two engines, which strikes me as a good thing in the Arctic. If these two are off the table, things like the Saab are reasonable. There's only 2-3 countries one needs stealth fighters for, and 30-40-ish won't matter in such cases.

The F-16 lacks the range to operate effectively in Canada. They would need to load it up with multiple conformal or external fuel tanks, which wrecks performance, and would still need extensive tanker support.

We've long pushed for 2 engines - which has made sense in the past. Even a successful ejection over the vast arctic would basically be a death sentence. Though some of our allies don't seem to have the same reservations, and it seems modern engines are a lot more reliable - certainly the F-35 only has one, so it looks like we're ok with it now.

The modern F-18's and the new F-15's would have also made sense, but agreed that modern F-16s would seem to be a nearly perfect fit if a single engine is now deemed acceptable. Given we like to keep equipment for as long as physically possible (and then some), the F-35 might have more runway (rimshot) in that regard though.