Thank you HiTech and Lusche for your answers. With this information though, shouldn't we take into account that as newer versions of a model were introduced, such as Pony B, the Mustang P51-D .plane 1 / tour 1 upgrade would actually be equal to .plane 40 something / tour 14?
Anyhow, from the latest and greatest patch, I can see a lot of work for those wonderfully dedicated volunteer skinners as well. In question: Do the additions of environment mapping such as inclusion of the cockpit reflection in the Zeke and P40, etc., become available to skinners for "pre-latest patch" models or not?
I could see skinners, wanting to hold off on new submissions of "old" models (maybe anticipation of eventual face lift), but for the most part anything Ki-84 on would show a sharp improvement in aesthetics due to environment mapping and give the awesome team already on board a more realistic sized update list.