Israel is a major maybe, I don't know if they'd even want the A-10s, but is a very politically sensitive deal considering regional opposition. Still, if they want them and are willing to pay, they'd be given preferential treatment.
KSA is the same, politically sensitive from an Israeli and Iranian perspective, but they could make extensive use of the A-10 in Iraqi, Yemen and other regional trouble areas.
I have to say though, working for a European Defense Contractor - one based in Norway, and working with nations that have been mentioned before, Eastern Europe seems to be a probable candidate - according to most industry rumors. Their main problem is cost, however, some nations like Latvia, Lithuania and Poland could shoulder the cost while fulfilling their strategic aims or deterring regional threats - in this case Russia.
Japan and South Korea remain distant prospect and have their own alternatives or priorities. Japan doesn't seem too interested, while they would make a lot of sense for South Korea, but again, the interest doesn't seem to be there at this point.
At the end of the day this is all speculative though, the US hasn't yet decided on a de-commitment from the A-10 so no sales are imminent and new and unforeseen future strife and problems will alter the calculus in ways we aren't seeing now. Future conflicts might make one sales target unattractive from a geopolitcal perspective while another becomes a likely candidate.
They could just as easily end up in a boneyard.
Just a bit of perspective from an industry insider.
I like it as an idea
. What would be their major role and what weapons would they be armed with. Does Indonesia have anti-shipping and coastal defense weapons that can be fitted to the A-10 - they have the KH-31, but I'm not sure about its fit on an A-10, conversions would be needed for sure? Or will they be used for ground attack in regional conflicts?
I know Indonesia has the Maverick missile, but only in its earlier forms - and these lack the anti-ship capability of the "F" model the US uses.
Maverick "B", "D", and "G" are land attack only.