I don't think new spells are likely, except in the case of a cross stating hole, and I'm trying to avoid those. For instance, if the way healer spells worked became important, I'd have to include a healer variant in for HARP, but as I said, I'm trying to minimize those. Dwarven magic will have some quirks, but likely they will be like the differences between a nominist caster and a somanist in Essence Companion.