In reply to tobyfk: 'I speak as someone who assembles 'guides' for new stuff all the time here in camel-land - digital cameras and cheap/free photo-editing/ graphics software make it pretty easy to lash together photo topos these days'
Well, they say that the camel is the ship of the desert (because it's full of Arab seamen - boom boom) but I think the problems of photographing the Pembroke cliffs are slightly greater than those that you are confronted with.
I couldn't agree more about the 'third groove to the left of the blunt arete' bit, but as I indicated above at least some of the CC guidebook writers are aware of the problem. My own point of view is that diagrams unmistakeably locating the correct abseil points would be a major benefit (and I have wimped out of abseiling into areas in the past for the very reason that I wasn't certain that I was abseiling in the correct place).
Indeed, your paraphrase of CC terminlogy understates the problem - I open the current guide at random and I quote -
Square Chimney The deep, seaward facing chimney in the centre of the East Face . . .
Ledgeway Climbs the ridge to the right of Square Chimney . . .
Illusion Corner The corner immediately right of Ledgeway . . .
Arete and Groove Start10 feet right of Illusion Corner . . .
Well, you'd better hope that they got Square Chimney right (and I could provide details of routes where either the start of the route (used to reference subsequent routes) or the abseil descent were misdescribed.
Sure. a lot of the new routes are unexceptional. But if you ask around, you find out what the good ones are.