So with the Wildcats being remodeled, what about adding the F4F-3? And before anyone says it: An F4F-4 with the four-gun package is NOT an F4F-3.
The -3 was faster by about 20 mph, had a superior rate of climb, better acceleration, was lighter, had longer internal fuel range, and was more maneuverable. In fact most pilots hated the -4s and wanted their -3s back (Thach in particular was critical of the -4). Most of the Marine squadrons flew the -3 until they received their Corsairs, and it was the most representative type on Guadalcanal.
I'd say that the presence of the F4U-1A alongside the -1, which have a similar disparity in performance, justifies the addition of the -3.