I'm sure RHR Dirt is a brill venue.
The only hang up I would have about it is that unless you live within a couple of hrs of it you prob won't want to travel 4+ hrs like I'd have to to get any practice on clay.
Gives a BIG advantage to those that can get there- as its the only dirt venue for 1/10 I know of.
At least on the astro track- we all can have a reasonable starting point as we all race on astro all year round.
Just thinking out loud