I'd love to hear what HN has to add to that.
Documentation should be a simple boring set of pages, it's not a place for designers to practice new designs, frameworks, or navigation techniques.
Screenshots should focus on the content, not what it looks like on a specific device or window decorations. Screenshots are hard work though because they need to be kept up to date.
Please share some of the feedback you received from your other teams
1) Keep it current, with a way of (actively) marking supercede / outdated / retracted copies (somehow? perhaps an (optional) url on each doc to check for "freshness"?))
2) Document the documentation. Having a master index greatly assists version control, esp for tech docs.