Being a fan of lists, I think the guide would benefit from two lists at the back: safe ticks for the grade and the serious list.
A list of a couple of routes of each grade from say 16 up that have especially good protection would be a great aid for people looking to break into the next grade and not get too many nasty surprises on the way. Not an exhaustive list, but just the editor's recommendation for a good route at the grade that a neophyte can push themselves on safely.
And just as important is a serious list. Tjuringa, Bad Cheques, Sufficiently Alarming etc. A list of unashamadly bold or outright dangerous routes of whatever grade. I think there will be a swing towards boldness in the coming years and talking up some of the classic frighteners at the Mount would be a great way to kick it off. there are local climbers who would relish the challenge, but it would also be great for visiting poms who are pushing the E grades back home and don't wan't to have to wade through the whole guide to find the E7 equivalents at Araps.