More of a suggestion than a question, but it seems like a link to submit this as an exercise, or some direction on formatting and how to submit it, would be really nice for getting feedback on this Challenge (not that I actually have my scripts ready to go yet).
Having some sort of built in code editor is something I'd love to see on the site, although it's a bit tough to implement. It has been proposed though and I think we're looking at adding some code highlighting features to the messaging system to better support code within posts. Since we don't currently have built in support for WebGL projects on the site nor code highlighting, I have to try and find unique ways of providing exercises. At the moment I am building a new programming course and will include some unique exercises that heavily utilize scripting.
Good to know. People seem to complain about WebGL and the lack of support for it quite a bit on the Unity forums. I haven't really tried it myself yet. It would be nice to have something for code and gameplay comparable to the how sketchfab functions for models, but I guess if it were easy we would already have it.