Actually, this is a very good topic you've brought up Tex.
Some of you might remember the 'Historic 190s Project' I've mentioned. It's nothing big, but just an attempt to try and lay out 190 skins that are well rounded between the WW2 time periods. In order to select skins that I'd do, I had to go over the Luftwaffe Orders of Battle between 43 and 45 to see which 190 JGs were placed where fighting whom.
It probably wouldn't be mandatory to use 8th AF skins for ToD USAAF planes, but it'd at least be recommended highly, I imagine.
So, when the P-51s and P-47s are redone to current 3D standards, I recommend that some of the 51/47 skinners should get together and research a bit on the schemes.
For instance, the P-51s served from 1944 to the war's end. A P-51B skin would be able to afford all 15 slots to whatever P-51B profiles can be found since it served a short time before being replaced to the P-51Ds. However, the P-51Ds served from the middle of '44 to the war's end - thus, it would be wise for the skinners to try and categorize and prioritize the candidates according to timeline.
Maybe 5 skins each devoted to each AFs, and then 1 of each AF skins devoted to 1 fighter group.. and etc etc..
In case of the P-47D more research would be required to cover the P-47s that served between 43 and 45.