Please don't be offended by my comments John but I will say what I make of it.
I understand what you are saying ( being an ice tech myself ) but would others ie newbies or those who think they are good but aren't ( at curling and always seem to know what the problems are, you  know the sort I mean ).

I think parts of it sound more complex than it really is ( or is it just me cos I'm a techie ). I have seen many a person being shown how to pebble  ( off ice  ) but then being left to get on with it. I have myself put down a sub-standard pebble once in a Scottish championship because I was rushed for time to get the games started on time ( despite one game finishing half an hour before they were due to start I was expected to be ready on time. You could see by looking at it it was insufficient but by no means the worst I have seen. Being indepth about the blade I feel was a bit long winded and could of been summed up like this. The blade will only show an uneven level on the ice due to the ice or the tyre pressure of the scraper or the blade not having been sharpened correctly. Anyhow when asked the question was the person looking for a straight yes or no answer or an explantion like you have shown ? just curious