I wish that rather than being a paint job you apply, they would have expanded wear and tear to have more variation like these. I've never compared paint wear from one time to another, but it doesn't seem all that random, there's certain areas where it always happens, in the same color. What if doing a repair on the paint reset the seed for the wear, so you could get flaking or washing out or corrosion or heat damage. Or maybe a paint repair resets things, and based on where you go the next few trips determines the type of wear you start seeing.