I just got back from Martinsville for the Truck/Cup race on Monday evening. I must say that the Cup race was (in my opinion) the best race that I've ever seen in person. (which to me is always better than on TV)
No fake cautions, which means 0 since the mistake at Bristol (2 races). Maybe that was the best thing that could have happened, ironically.
I think the elimination of the ride height rule may have made the racing better than I estimated that it would. The spoiler likely had no effect at Martinsville, nor the splitter, so that's really the only other change that would have effected this track/race.
I enjoyed Martinsville more than Bristol as far as the track and view. Atmosphere I don't believe can be beat by any, but that's not very important to me.