OK, up front I'll say that CD5 was great - loved every minute of it. And if it stayed exactly the same forever I'd be a happy camper.
But I thought it'd be interesting to see what people think could be done to improve it, and maybe the VMX boys might see some gems in amongst the usual load of crap!
I'll start off with a few thoughts:
The track. I know it's vintage motocross, but we have any number of races throughout the year on real tracks, so I think CD should be more about just riding around and getting a buzz from seeing the bikes. The harder tracks, especially if it rains, simply stop a lot of the bling bikes, or older bikes, getting out and being seen. The first two CDs with their very easy, open grasstracks had a much greater variety of machines on display and gave the spectators a better view. Perhaps as a compromise somewhere like MX Central could run the MX track AND a simple grasstrack in the middle of the Dirt Track. Or go for a rural property as Twisty suggested.
Special riding sessions like the TTs Only, Brit Bikes, Spanish Bikes themes at earlier CDs.
The swapmeet. Again, I preferred the approach at CDs 1 & 2 with a single area laid out for the swapmeet. Maybe that had been planned at CD5 and the rain blew that out of the water?
Some sort of show and shine type thing? It's good to see the bikes on the track, but how good to have all the great restos and bling machinery in one compound and awards for best of whatever?
Make it a full week long, like the Mid Ohio thing. Maybe add in some competitive events too? Or, combine it with the Nats for a true vintage festival, and maximise attendance for both.