Nice thoughts and very inspiring - until the last block about UNA. ;-)
Una has a long way to go to fit what you are describing in the article.
The biggest Problem is, that the community around UNA is not such community as mentioned.
I have to use wordpress to generate the content I want and include all with inframes.
WTF````????? It is 2019 - WHY????????
That´s like beaming backwards in time ....
For UNA to become the community software of the future - UNA has to have ALL THE THINGS other communities has in the past AND have some extra. Sorry, but that´s what it looks like.
You hav to be better in EVERY single Point - in EVERY

Design, Usability, SEO, Customisation, Plugin-Support, and so on.
But the backend is like in 2003 or something. I hav to click several times to edit a page, and then I miss the editor to have WYSIWYG content in a SIMPEL PAGE !!!
WAKE UP - WAKE UP - WAKE UP