Yes, if the US Army used them, then later bought F-20s, there'd be no need for the A-10 and the USAF wouldn't be stuck today with a platform they don't want. 20/20 hindsight is a wonderful thing.
I was just thinking that instead of the A10 it might have made more sense with hindsight to have gone with the
YA7F (the derivative of the A7) then the A10. It could have been developed earlier then OTL. With the right modifications (like a A9/A10 style Titanium bathtub) it could have been a versatile design good for CAS and strike missions while also capable of doing some basic handling of itself in the air. With the right versatility involving different weapons option it could have been quite versatile and useful. More so then the A10.
Now I'm thinking about the USMC potentially purchasing a navalized variant to supplement the early F18s. Allow the F18s to grow more air to air capability while the A7F becomes more of the jack of all trades air to ground jalopey of the Marine Corps.
Wonder if there could have been any foreign sales and to whom.
I'm thinking it'd end up being designed for basic air to air with the capability of carrying 2-4 short range IR missiles (like the Sidewinder or depending on the foreign purchaser maybe one of the other short range heat seeking options) but with the ability to carry a large amount of air to ground ordinance of various types.
In terms of foreign purchasers two options that occurred to me would be the ROC (intended to be operated dispersed with it's strong landing gear allowing for roadway operation and the ability to carry a M61 and up to 4 Sidewinders along with a impressive load out of Mavericks or other short ranged guided rockets/missiles for slaughtering waves of PLAN landing craft. Another option might be the ROK but instead for taking on legions of obsolete but still numerous NK artillery and armored vehicles.
I could see it potentially have a pretty decent air to ship capability either with a bunch of smaller guided weapons (like Mavericks/Penguins/Sea Skuas/Hellfires) or a handful of say up to 2 to 4 larger more capable muinitions (like say AGM 123 Skippers or Harpoons) along with options for large quantities of "dumb weapons" including various bombs, cluster bombs, rocket/gun pods and such. Maybe even a secondary mine laying role with one carrying say two CAPTOR mine systems per sortie.