I do like the idea of rituals being a thing for caster-types. They take longer to do and aren't something you'd likely be able to just toss out during a fight, but they have a place in things, and can enable some fun scenes or other writing. Now that I've seen everything I suppose it's time to start thinking of character ideas. I'm not sure I have anything for Specialist types, though. I still like making someone who primarily operates Arts by summoning shikigami spirits to do things for them, from fighting to spying to whatever else. It just seems like a fun idea for a character. And I want to try doing something with Fighters, just to show something fun there. I'm not sure if it'd better fit into specialist or another class, but possession as a thing does strike me as potentially fun to play with, with the agent (or the source of supernatural power or skill for the agent, at least) not really being the person so much as a youkai or other being that's cooperating with them, presumably with their knowledge and consent.