I don't know anything about the CFR20.
It's WAY (I mean like way way WAY) under the weight in this new O/F20 rule. Also, we'd have to put a jib on it. Still not sure why that is a requirement. If they left it open with only a 50m^2 limit, why not make it open to sloop or uni as well?
My guess it would be way overpowered upwind and scary fast downwind...
Mike, the CFR is a lot lighter than the N20c, with a taller mast and 8.5' beam. It can be controlled

Put those beams on, it would be interesting to see how it does. I think the biggest problem would be that it's over the 50m^2 limit.