The idea there is that while taking notes I don't want to look at the screen and click a button to add an action item, set its assignee and due date etc. I would rather participate more in the meeting and just keep typing (touch typist should get me), with the tool being smart enough to parse it as an action item. Its not as smart as it should be, but thats where we want to be.
Another small but neat feature is interactive widgets. I am not sure if you saw the how you can run an instant rating with all the participating. Its just one widget right now, but we are planning to add many more like poll, survey, mini-workflows, scrum templates etc.
Let me know if that did / didn't make sense. Happy to hear feedback!
PS: Before this, I myself was a heavy user for Google Docs for taking notes.
But I'm honestly having trouble seeing what this does that isn't just as easily handled by Google Docs, Word, or any other editor.