I actually cut a "Martial Artist" calling, that was sort of an overlap of "want to hit things" and "want to sneak around". It had issues of trying to do too much, and also having an over-complicated core ability.
I've been mucking around a bit with a "sneaky, in the shadows" calling that might make it into the next update. As for a "want to smash things" I haven't figured out a way to make it work that gels with the rest of the game yet.
I'm always happy to hear ideas for things, although I don't think I'd include other author's work in the book itself. However, I'd absolutely love to see "Compatible With Brighter World" on supplements or standalone Callings! Although, realistically, if you go that route I would probably say to also make them Cairn/ITO compatible for the sake of interacting with a reasonably sized audience.