Actually, what if we just do it ourselves? I think it's quite unlikely that Apple is going to do it, so what if we create, say, a browser extension that adds user-contributed notes to the documentation pages? The notes can be code examples, warnings about common pitfalls, etc. We can use an upvote/downvote system to filter out spam and highlight the helpful notes. Is anyone interested?

@zhenyi hahaha c'est magnifique

@zhenyi reminds me some code comments

@zhenyi I know it doesn't say this but I'm reading this as a "Paintronics" device

@zhenyi Oh so very helpful 😞