It should be a no brainer for them to make the F4U-4 or other late variants in future, personally I hope to see the F4U-5N one day. A lot of work can be reused and it would work well with the existing Sabre and Mig-15. I actually expected the F4U-4 first since it was used both in late WW2 and Korea, and shared its power plant with the F4U-7 that could be used on the possible Vietnam or Middle East map.