An administrative space where you can manage permission, create work-flows and allow parallel groups to advance simultaneously (ex: developing content while the legal team check certain aspects). You can also comment on other works without changing the content, and maintain several drafts - which allow you to test before you go publish.

Note, that if you can code it with python than you can display it in our site. If not, it still work but we need to keep an eye.

You probably develop on your local. So fork the git repo and push it back when you are done. Well then just verify that it doesn't collide with the current code and publish it.

FYI, currently we cannot expose JS to the end user. A step in a time.

You can still host group collaborations. You can share with us your ideas, we might be able to help. You can also open yourself.