I am glad you brought that up. It actually combines with my next need, testing. I have to implement some tests as the final step of the project. I normally use QUnit because it plays nice with jQuery. see https://qunitjs.com/. I also want to have the tests live in pages in a group here instead of outside html files which have to be maintained separately.
The only missing piece is a standardized way to load a plugin for that group. Once I can load a plugin based on something, like something in a group, or in a post, or by user, then I can do virtually anything, including load QUnit and turn the posts into live test pages for features.
I was thinking of doing something like that just for my testing need, but it would be really great to have it a generalized feature for FBI. That would be awesome!
(imagining the spec for that happening right now, right here)