Some of the best skate techs reshape the blade the way they think it should be, custom, for the customer. It is possible that the amount of reshaping some of them do is as great as the original difference between many of the factory shapes. That takes a fair amount of expertise, knowledge and practice, as well as the right tools.
I once tried to reshape a pair of Ultima Dance blades (more specifically, Matrix I runners) to be like MK Dance, which I loved, but which are priced rather high. Since my hand sharpener would have been impractical to make such a major change, and I didn't have a powered bench tool, I tried to do it with a standard bench grinder, and had a pro shop put the hollow back in. I failed - some of the subtle shape issues are fairly small - on the order of a few thousandths of an inch or less. Plus, I wasn't up to milling a thinline grind, and there was no way to make that large a toe pick change, because the Ultima dance toe pick shape has metal missing in the places that MK has metal, and those two things are probably at least as important as rocker curvature and tail length. AFAIK, the shape of MK Dance blades is too different from any of the other blades to be easily imitated. I ended up discarding the result, wasting the $110 cost of those runners - which are no longer easily available.
What would be nice is if we could adapt one of those CAG guided re-profiling machines that the hockey crowd is so enamored of, to make our own custom blades, or match a desired measured blade shape. Some of the new CAG machines say they work with figure skate blades, but I don't know if they would do the job. I doubt they handle toe picks, and we would really need to start with blanks, rather than other blades, if we could get them, so we could add in the toe pick shape and placement we wanted.
Does anyone know anything about the new CAG machines, or about buying skate blade blanks? One person told me many of the blanks that some major blade makers use came from a single German steel factory, but I don't know which factory or company.
Alternately, are there affordable metal-crafting CNC tools we could get our hands on, with an error of no more than a few thousandths of an inch (MK says their laser cutters are accurate to .004 inch), that can handle blade-thickness metal? I'm guessing the laser and water cutting tools that have the power to cut metal that thick are all very expensive (I've heard around $100,000 and up), and hard to get your hands on.
I've looked into modifying the available high quality hand sharpening tools that impose a uniform hollow radii, like Pro-Filer or the old Bergman tools, by adding a very coarse sharpening cylinder, but haven't gotten far enough yet, and am not sure how fast that could be.