EH don't do the responding to pressure thing. They do the absorbing like cotton wool thing.
BG, your posting would inform and persuade anybody and everybody immediately, so would mine to an extent. I think the right tactic is to send them both to as many bits of the media as we can all manage, under a unified theme of official heritage neglect, and at the same time tell EH exactly what we're doing. Let them be forced into a crisis meeting in the light of lots of negative press comment and publicity rather than be able to dismiss the likes of us yet again.