Why would the A-10 (Or a light attack aircraft) be hauling ass from there instead of already being in the air near the AO since it has a lot more fuel and loiter time (and lower cost per flight hour)? Or being closer since they can launch from more austere airfields.
Also, I have read articles:
* Quoting JTACs saying dialling in the fast movers afer their arrival takes a lot longer than a slow-mover in a near-contact situation which can be a serious issue (and large removes the "haul ass" 8-minute rule advantage)
* Quoting army captains saying the loiter time is so low after the fast movers have arrived that enemy forces basically learned to stop the attack for 30 minutes then resume after the fast-mover has had to go to the nearest tanker to refuel.
I can maybe see the F-35's sensor suite helping with the first one but not the second (Unless it is so good that it can reliably find targets on the ground even when the JTAC cannot be sure).
Or when I read about Special forces literally having to do end-runs around official policy to get some A-29s to support them because the existing kit wasn't doing the job.
I am not an "A-10 forever" type but I find the "F-35 solves EVERYTHING" crowd to be a bit over-zealous and I have read enough about issues with the Airforce (brass especially) and its relationship with the CAS/COIN role to make me wonder about their ability to evaulate without bias.