As some of you know, I don't have my car yet. But have been thinking about this issue and looking at interior pics that show the whole interior of the B-pillar and rear post where the wear is occurring (not just close up photos of the wear). I also recall one recipient of their car where they said they had given him the wrong interior (like obeche wood instead of carbon fiber). I dont recall if there was someone who got the wrong interior color.
But anyways, for that person, I think I read they were just going to "replace" the wrong trim pieces and it might be as simple as snapping the old ones out and the new ones in. I wonder if these post areas could be switched out in that manner. If so, then Tesla could create new pieces to fit in those areas that are made of non-porous, more durable material. NOt sure if hard plastic is the right choice (since that could get scratched) but something of the like - color-matched of course. It may not look as nice as the wraparound leather look, but then again, it might look much better than seeing such wear after such a short period of time.
Or, design a new post that doesn't jut out as much (or recesses away) that would snap into those places also. Again, possibly of different material.
I know there are a lot of "ifs" here, but to me, that would be the best case and relatively low cost, low effort resolution.