Another suggestion is whether it would be possible to create a system that facilitates the application of skins in cars. You would drop the skin of the desired car, do the painting and then upload it through the system and it would apply the skin automatically. Hug.
It already does this providing you have enabled skin transfer and the server allows it. Join a server using your skin, it automatically uploads it to the server and everyone gets it.
I already knew that in rFactor skin transfer was automatic on some servers. I had only thought of a simpler way to do this, since it is necessary to find the template of the car (sometimes I do not find the template), make the change with your painting and then find the folder that contains the car in the simulator. Thanks for your answer.
Templates will all be in steamapps\common\rFactor 2\Templates from now on. I don't think dragging and dropping can actually be done, but maybe a button that will open the folder where the skin should be? Open in explorer or something like that.