The one factor that might come into play would be if you establish a quorum, and how small you would want it to be or how big. I suspect, and it's one way of looking at it, that if you make it too small, you reduce its importance. It might be convenient in terms of advancing debate, but if you're basically debating into a mirror, I'm not sure how meaningful that is.
On April 4th, 2019. See this statement in context.