Currently, there are six forums. One is heavily (relatively) used, one a bit used, one even lesser but a bit used; three are almost not at all used.
A C-SPAN board in the "Political" folder would be better used, I expect, than a separate forum, at least after the novelty wore off. And the entire raison d'etre of C-SPAN is politics.
I think it's fine to have a C-SPAN board -- whether a separate forum is unimportant to me but may be a judgment call as to future use. Mr. Garfunkel may well see limited use as a potential plus, being less subject to the sporadic invasions of the soapbox riffraff.

As Mr. Vandelay notes, though, a dead forum is, well, self-explanatory.
There always were people who trotted into the C-SPAN Community who were interested in C-SPAN much more than they were that personal & political debating club. The thought may be out there that a forum here would be useful for such as those -- though they were almost always heard from once and not again.
'S'ok by me.