I like the sidebar generally, but feel that Fields do not belong there. Fields are important for categorizing notes and insights and we use them extensively for filtering and feeds on the home page. Now they are a bit hidden in the sidebar and its easy to miss inputting that vital information.
This is especially troublesome in a big corporation with many collaborators, where newbies are coming in all the time and might not fill out everything that is not directly part of the visible workflow.
Maybe a collapsible Fields area at the top of the note/insight could help if there are many fields?