Jackonico
I think you will find that the OV-1 was in fact the Mohawk. A recon aircraft which had an extremely limited weapons capability and was a somewhat problematic flier. Have a look through their serial number listing and see the inordinantly high losses due to mishaps.
On the other hand, the last OV-10 lost was frankly fighting where it shouldn't have been and outstayed its time there It had dodged numerous IR SAMs before they ran out of luck. I never understood why they were retired except that they weren't very sexy and didn't have a strong political backer.
OV-10Bronco.Net - Start Page
Given proper countermeasure and targeting system updates, the Skyraider may well be an answer to some current requirements - 4 x 20mm Cannons, 8000 lbs of ordnance and fuel for days. Even a few Mig kills to its credit.
A-1 Skyraider - Wikipedia, the free encyclopedia
The Official A-1 Skyraider Site
Infantry officers today would cheer at the opportunity for a support aircraft like that. Low, slow, heavily armored, heavily armed, with enough fuel to hang around a very long while.