I love the altered classes and the GMs in my group and I were looking at doing something similar with spellcasting (disassociating the tradition and the class). Looking over your docs, I do have a question. How unbalancing would it be to take away the "divine/arcane" tags on the traditions or what other restrictions would I need to put in place do you think? For example if I wanted to make a preacher type character (priest with the lyrical tradition), one who wants to study the healing arts (mage with the rune or clerical traditions), or a spiritist of sorts (animist, spiritist circle, hedge magic tradition).
Also, if the divine and arcane tags are removed, would multiclassing animist/sorcerer (giving you both a familiar and an animal companion) then both go toward your levels of say your "druidic tradition"?