I know last year there was a "Waiting Room" type idea that seemed to get thrown on the back burner. They had just closed it when my friends and I were pulling into car-camping, so we had to do a little maneuvering to camp by each other.
Seemed a major problem was checking cars, they would check line of cars, send them along, then another, then another. We were in the same line so we happened to be far apart and got REALLY lucky.
Maybe this year an idea would be to expand the waiting area and/or have a couple separate lines for multiple vehicles that are traveling together?