In reply to Andrew Wells:
Every list has its biases and I've no doubt that this has ours and Inigo's etched into it.
That said, what you've described - insecure climbing, tricky feet, smears - is pretty much quintessential Grit. That subtly of movement, and ease of slipping off when you're not precise enough with your foot placements, is what makes it such a great (and/or frustrating) medium to climb on.
I'd also say that there's never going to be a single list that's 'the list', but I do like the fact that there's lots of lists (just look at the various ticklists/wishlists for a whole load more).