One thing I noticed is I have never noticed Open at a regular contest. Scale Masters championship, TG, and the Nats, stated above, are the only places I know of, and they are not regular contests. Seems like the class needs to be offered even if no one enters it right away. It will be soft in the beginning, but if it is not offered, then it will never catch a following. I prefer to enter BOM classes, but it is time to have both.