I'm not absolutely against this, and could be persuaded, but my concern is that members have voting rights, and ultimately control the Foundation.
We are, and should remain, an open and entirely transparent organisation.
I don't know of another standards organisation that allows for voting rights under pseudonyms.
IETF publishes full names for IESG, IAB, Nomcom, etc, for example.
I can be persuaded to change my mind, of course, and I do understand (and worry) that some people may have legitimate reasons why they do not want their name publicly listed.