*if* (please, please, pretty please, I've wanted to try a binder out for years) you pick Charm, I'd really like a subthread to do my bindings in. Technically, each of those should be negotiations/arguments that should take a few paragraphs, but I don't want to bring the narrative to a screeching halt when I indulge. That'll give me a place to write without throwing things out of whack.
I also think that binders and Planescape go together like caramel and sea salt - one classic ingredient, one fancy new one, but they complement each other beautifully. (I really, really want to play. Please?)