Personally, I don't believe this is a class that should be open to "open" or modified cars or motors. I think a single class added to a day of nitro racing plenty, and three classes is a LOT for a non on-road specific class. It's a BUGGY-based class, and in my opinion, a very specific audience that will be interested in a class like this.
I hope I'm wrong and the class explodes, brings a ton of new racers into the fold and creates a whole new market of gas racing, but I don't think it has that potential. Blowing three new classes on race day on a buggy chassis is a lot to bite off at one time, unless you are all on the track at the same time (a la an SCCA Regional or National club race).
Again, that's just my opinion, and the input is really only pointed towards the potential MWS class.
doug