I have to be honest. Some areas in Font make me miserable because of the batteredness of them, but I'm not going to stop climbing there (maybe I would if it was part of a "improve Bas Cuvier" project. I think I try to be sensitive to the crag envrionment, but last time I was at Plantation (ages ago) I took the shortcut from the gate to the Pebble.
I think informed debate is the only long term way that issues like crag impact get delt with. Only a genuine acceptance of new behavior by the majority of crag users will cause lasting change.
I think that a governing body can perform a very usefull role in creating debate and raising awarness of issues. Creating posters and so forth is one way of doing this, but it is only a one element in the longer term.