Having the CS symbols restitched is maintenance in my eyes, as long as its done perfectly and it is noted (if you ever go to sell the car) that it was done. The interior panels on all two door L-bodies seem to be in that condition, and I do not see it hurting the value to take them out and repaint them, but again, as long as it is the factory color, not some SEM spray paint, I'm talking Mopar Paint Coded gun sprayed paint.
As mentioned, fixing these types of things only helps matters.