I'd as soon keep the F-16s. It may be ok for the Navy & the Marines but I'm not impressed.
My mother's Father was the project manager on the F-16 and the F-1 Toranado for General Dynamics.
My Step Mother's Baby brother is on the F-35 project and
The F-16 was sold as a 2 for 1 project.
The airforce could buy 2 F-16's for the price of 1 F-15 and looking at large losses against the Russians that were building the Mig 29 at the time and no one was sure what it could do at the time it made sense to have more planes.
Looking at the roll of the F-16, F-15,& F-18 all have the same roll of figher bomber.
In teaching the guys to fly the new plane my uncle had to fly the 15, 16, 18 and the F-1 to have a frame of referance. He said hands down the F-35 is more than up to the task of the older planes with added features.
In the 60's we tried to pick one plane that all branches could adopt. It was the F-4 Phantom. I lacked a few things like a gun.
The F-35 JSF program goes back to those roots. The navy and air force have different versions but the major compnets are the same.
so forward bases can steal spare parts from Air craft carriers and vise versa.
The hat I have from the project has 9 flags on it.
USA, England, Australia, Canada, Norway, Italy, Sweeden, Turkey, and Not sure it is a Red Stripe on a white stripe on a Blue stripe.
Like all of our advanced weapons the Isrealis get them to test them in comat for us.
The Isrealis do not take our weapons and make them better they ask for a few options they want based on proformance and since thye do not have a greedy congress that needs to make a desicion on what plane or version to buy they can order what they want.
With most of Nato accepting the same plane it will be like the M-16. All of Nato has to have a rifle the A- takes the 5.56 round and B- use the M-16 Mag. And the mass produced componets make the plane cheaper for all. With many countries accepting them it will be alot of work for assembly, testing, training and spare parts.