What about having a paint shop put on a clear coat after the color sanding? I guess with the wrap you are protected but honestly, when you color sand a finish you take away part of the barrier that is the skin of the paint.
The problem, IMHO, is the additional wait time before curing is complete before clear bra wrap could be applied. The amount that is sanded off is a fraction of the surface. The detailer uses optical meters to measure the thickness of the layers. The paint is never touched and the clear coat removed is negligible.
The clear coat doesn't need this treatment if no clear bra wrap is installed. The surface imperfections don't show up as clearly. The clear bra wrap shows the imperfections very clearly, that is why the extra sanding is being done. If Tesla Motors had painted my vehicle with the same quality as recent Model S, this extra step would not be necessary. Since the paint is about two months old, this process works great for the clear wrap that will protect the surface and also have an excellent appearance. i've seen other Tesla vehicles in their completed state, and it can be dramatic in comparison.
I am visiting the detailer tomorrow. I will ask him your question. For many, having Tesla pay for repainting would make them happy financially, but that paint work would be at the local body shop and that is not suggested by the experts or the Service Center. IMHO, it is better to remove the defects, rather than add insult to injury. The proof is in the results, and I already saw the original "orange peel" appearance of the original clear coat. That isn't why the wet sanding is taking place, but according to the detailer, improving that finish is a side benefit to the sanding. Would more clear coat resolve those variations? I doubt it.
One more observation from the detailer during an inspection of the paint last week. It was clear that excess paint had formed at the front corners of the hood after painting. The effect was like a paint drip, but contoured to the corner pointed edge. It's something that the professionals notice, but I didn't notice it and it didn't bother me since it seemed slight.
If you want to test any auto paint surface with a perfect surface, look at the reflections of fluorescent tube lighting in your paint and then compare the reflections of those fluorescent tubes in your windshield.