I think we all know why the Discipline counts were different for New Order Grand Masters: expediency. Joe Dever wanted to add some new Disciplines, so he just rejigged the rank chart to account for them. As for an in-universe explanation? That is a thornier problem, but IMO, it's not *our* problem. We're each free to come up with whatever explanation satisfies our own desire for internal consistency; I don't think it's PA's job to provide that for readers. And I say this as someone who *does* like to search for the internally-consistent explanation. :-) If you *want* my in-universe explanation... the best I've come up with is to consider Kai-alchemy and Magi-magic as "extra" Disciplines, on top of the "core" ten Kai Disciplines. Part of becoming a Grand Master was branching out into the lore of other traditions; Lone Wolf had Banedon and Rimoah around, so Brotherhood and Old Kingdom magic were obvious choices. New Order Grand Masters have these two to choose from, plus Astrology, Herbmastery, Elementalism and Bardsmanship -- maybe they had a Sage, a Herbwarden, and a couple of others come along to teach them. In any case, Lone Wolf decreed, with Kai's guidance, that New Order Grand Masters should master five other paths rather than just two. Of course, this doesn't explain why it's possible to master all *six* and * not* take one of the "core" Kai Disciplines. And it doesn't explain why a Kai Grand Master Senior now starts with four Disciplines. You could say that they start their training in the "extra" Disciplines while still Magnakai, but that would suggest they should start with three "non-core" Disciplines -- I certainly never did this!