[capableweb]

Collaborative live editing is available as a experimental feature: https://www.mediawiki.org/wiki/VisualEditor/Real-time_collab...

Obviously not ready for prime-time, but might get there in due time.

Advanced macros? As far as I've used both, I never had a macro in Confluence that couldn't also be implemented in MediaWiki. You can basically have access to the whole of PHP in MediaWiki so not sure what the limitation is here.

> deep integration into Jira, bitbucket etc

I mean, obviously. Which "open source corporate wiki" could even have as deep integration with Atlassian as a Atlassian product? Atlassian would never allow you embed non-Atlassian stuff into BitBucket. Why would they allow for example GitLab to embed their issues in their own product with as deep integration?