CML raceway is pretty unique in itself already, I didn't appreciate it at first as it was the first track I raced on, but after doing the national series the relatively smooth, technical, more defined american style features of CML is a really nice layout to race on compared to the typical UK style bumpy surface with more smooth rolling jumps and 'natural' features, and for some reason it still doesn't get the attendance it deserves.
Would have to be a lot of effort to get a following, but the clanfields meeting a little while ago on dirt was relatively successful, although I know Pidge wanted a larger turnout and was a little disappointed.
I know myself an American style track on dirt would be the most appealing surface to me to race on.