This is a recommendation that pertains primarily to All Data view/export. Currently URLs that have a canonical tag, there is a 200 OK & Canonicalized satus code. For the sake of easier filtering and faster analysis of all data, I think this status code should broken down into the 2 following codees:
200 OK & Canonicalized to Self
200 OK & Canonicalized to Different URL
I know that you see separate reports for both now, but when you're looking at all of the data, this segmentation is better.
Just my thoughts...