To that note, is there a page listing out all of these settings overrides? I'm thinking we could each have our own versions of .vimrc for JSBIN :-P
There's a couple of others, and docs will be coming soon. In addition, there's an exposed API that allows you to point JS Bin to a JSON file and it'll load in and save those settings - which is useful for starting a class for teaching where you want the editor in the same mode across all the students.