Yeah, I donāt like the term mastermind, either, but itās a name for groups like this which Iāve used in the past, elsewhere. Keeping it as a nominal working group may make the most sense, given the points you outline.
A few of the regulars canāt make it to the next two meetings; in lieu of this, weāre postponing the WG meetings until June. If anyone would like to have a Marketing WG in the meantime, reach out to @jdorfman.