I would like to just see them promote the BY comps more. I don't know how the KCBS fee structure works, but maybe make it free to sanction a BY comp if it's at the same time as a Master's series. The comps I've seen that do that, seem to have better BY turn outs, the Master's series doesn't suffer, the organizer gets more people to their events, and some of those BY guys will do a few and then decide to step up.
Once you get out to a comp a couple times, interact with some of the other cooks, etc, most people realize that what starts out a little intimdiating (big rigs, fancy cookers, etc) really isn't. Then some of those guys will decide to do some Master's Series.
Adding a series just to add a series seems like an unlikely solution to the problem.