I must admit, seeking the OV-10 rather than hogs is a bit baffling to me.
On the OT AF-bashing whine-festival, the AF primary mission has always been control of the airspace, destruction of enemy C&C, followed by battlefield interdiction. This has been a resounding success over the last few decades. Debate all you want about the percentage of CAS, but it does exist and it performs well. The force structure you see was created to deal with powerful enemy air forces and enemy AD forces. Absolutely NO CAS can be conducted without total control of the air, and this requires <gasp> significant quantities of counter-air forces, and aircraft capable of the weasel mission... F-14, 15, 16, 18, 117, B-2.
If our troops were screaming on the radio because they were being cluster-bombed by MiG-27's or SU-25's, they wouldn't be asking for an OV-10, a Harrier, or a Hog, they'd want 15's, 16's, and 22's.
I freely admit in our current super-low-tech combat, a higher percentage might be devoted to CAS, but our force structure MUST stand ready to defeat a heavily armed nation like India, China, or any other nation with significant air power.