I think one of the key differentiators I bring to the table as a venture capitalist is a solid understanding of the public markets and how they operate.
I have never seen Jeff Bezos, Marc Benioff, or Reed Hastings complain about being public. Nor have they ever argued that being public prevented them from doing things with a long-term focus.
Having an investor on your board of directors who is naive about public markets or finds them complex or scary is non-optimal.