Quite an interesting discussion. Props to you guys for indulging that Donald Duck character for as long as you did.
Myself, I may not have first-hand experience with the Thunderbolt II or any other CAS platform but really with the huge shift towards airspace penetration and stand-off capabilities, if I were in charge of that stuff I would gladly offload entire wings of A-10 if it freed up funds for acquisition of F-35 especially considering the kind of adversarial systems we would be looking at in any unlikely event of confrontation with Russia/China. It would take major SEAD ops to create a suitable environment for the A-10 to operate in against a land force belonging to either of those two because of the sheer networking and air defence power involved in modern AD units in these countries.
Honestly, I'm sure we all have at least some affinity for the Warthog; it is rugged, has high survivability, has a powerful armament and above all it's a proven asset. The thing about the A-10 is, it's a great machine for blunting and suppressing enemy offensives when you need to as well as being a superb tank-killer but it's too heavy a platform for the kind of minor skirmishes we tend to see these days in Afghanistan and elsewhere. You can perform the same mission with vastly cheaper assets yet with the same (or better) efficiency and effectiveness; it seems highly unnecessary to expend Mavericks and a couple hundred thirty mike-mike on what turns out to be a platoon-sized formation. The kind of threats we are observing now and for the foreseeable future simply don't justify the expenditure on current single-mission assets.
I'll go a step further and say that even strategic bombers like the B-1/2 could be replaced or supplemented in the CAS role by far lighter and cheaper aircraft with a better ratio of maintenance work to flight time. I'm confident the Super Tucano and alternative craft like it would be superb in filling a CAS role within LIC boundaries. If we were to look at this from a resource-to-kill ratio perspective then it would be worth considering what it takes to get a bomber up in the air, plus armaments, fuel, etc. and keep it there for an extended period of time, relocating and striking where needed, as opposed to what it takes to push out a turboprop with wing guns and rocket pods, to get it to the AO, attack the enemy and then return. Food for thought I suppose.
Either way, the A-10 had it's time. Now it's in the USAF's best interests to let it go.