I think most figure, hockey and speed skate sharpeners reshape blades and alter the rocker profile and the edge on new blades. (In different ways, by skating discipline.) The best continue to do so, and trim the drag pick too, as needed. The sharpener I have been studying from alters blades to match the skater's evolving needs. I would never have guessed much of what he and others have told me.
If you alter these things yourself, it is very easy to go too far, speaking from personal experience. Very small changes at a time are the way to go! I learned a lot about how blades work by experimentation, but it was an expensive lesson.
There are no comprehensive guides on how to sharpen and mount blades, or adjust boots. The closest thing there is to a guide on blade sharpening, Skateology, only covers very basic techniques, yet is controversial and is a very hard read (a mechanical engineering background might help). I've thought about writing my own guide, using hand tools, but, as mentioned elsewhere, the proprietary tricks I've learned from pros should be treated as a trade secret until they retire. Anything I said would be controversial too. All the best skate technicians are self-made masters, and have developed their own idiosyncratic techniques.
By the way, rivets can be removed and remounted. And if Aussie's technician altered an MK blade to look like an Ultima, they used up a LOT of metal. Why they didn't start with another Ultima?