re: One possible area of concern
Hopefully, when the rover gets moving, the bumping action of going over small (uninteresting volcanic, lol) rocks may loosen some of that 'fine dust' off the panels. If there was convection going on upon landing (high winds over Gusev resulting in higher temps at ground level... as I remember them saying), there must have been some dust settling in the area.
If I don't keep my solar lights clean, I've noticed that they are not at their brightest at night. :)