Military folks, is this good? Is it enough?
My (extremely limited) understanding is that the F-22's are better.
But, if they can upgrade the fleet of F-15's for the cost of a squadron of F-22's.... So long as the F-15's are still good enough, I'm for it.
My question is, why not have both? Depending on the roles that each can fulfill.
You can only change the oil and tires so long before the platform wears out. The typical fighter plane in the USAF, since the beginning of the jet age, has been rendered obsolete with 5-7 years of it's initial deployment.
We have been extremely lucky with the F-15/F-16/F-22 designs because they are so good and our adversaries have not really attempted to develop a next generation threat...until now.
The F-15 is great against peer threats but has been proven to be vulnerable to the F-22 in exercises. If we don't provide capable aircraft our fighter fleet will evolve turning our planes and their pilots into a target fleet.