Well of course the F-35 program is immensely political. Those up the top don't factor in the needs of the "grunt" on the ground. Case in point the 3000+ US casualties from IED's exploding under Humvees. Australia offered Bushmasters to the US - to be licence built over there, but this would have meant loss of jobs where Humvees are made, so it was deemed acceptable to loose more US soldiers to keep US jobs in key US states.
Keeping the A-10 flying probably involves only a few hundred jobs. Building the F-35 involves many thousands of jobs. So, with a finite defence budget (albeit enormous!), something must give to keep those 35's rolling out the factory door.
Personally I believe much like keeping the BUFF's flying, there is a very strong and compelling argument to keep the A-10 flying. Thing is it has lost favour with the top which is interesting in that the current USAF Chief Gen. Welsh at one time was a A-10 pilot! The A-10 is the ugly duckling in the nest and no longer wanted or loved. Other assets as discussed have and do the CAS role as well - from the B-52 down to the F-16. The A-10 excels doing the really down and dirty CAS stuff - right in the face of the bad guys. This is of course a enormous moral booster for the troops in contact and something they've become almost "addicted" to. In certain situations. nothing can beat the human Mk.1 eyeball - nothing. To me the most important job for the A-10 is CSAR ("Sandy"). Drones will never do this well and helicopters are just too vulnerable - too slow as well from a response time perspective. I have doubts the F-35 will be as effective at CSAR when compared to the A-10.
The USAF is leaving gaps in it's armoury. As it is, there has also been no replacement for the EF-111 "Raven" and the USAF has had to use USN Prowlers and now Growlers for it's jamming requirements. A huge amount of faith is being invested in the F-35 and one can only hope that this amazing aeroplane can in fact do all it's being touted to do. If it can't, other technologies will be developed to fill the gap.
So it goes, the world keeps rotating, major military procurement decisions are made way above our pay grades and this entertains and creates discussion for we amateur modellers! I feel sorry for the "grunts" who will undoubtedly miss the Hawg, but they will adapt and move forward. I think we need to start a group build for A-10's to be complete around the time the A-10 is due to be retired -anyone interested?
Jeez, we can't even go to sleep these days and expect to have the same PM in the morning - this place is becoming like Italy!