For me, Created Date should reflect the date the original contents were created, not the date when the note itself was created (which could be days, or years after the event). So totally support request for better access to the created date. Reluctantly I use Reminder Date for Due date. Not perfect, but ability to include reminder dates in note list view is welcome.
Just want to add my concern to the loss of the full TAGS page. I have a deep hierarchy (which will benefit from the ability to display child tags when searching), but when I allocate new tags to a note, they just go to top level. Then once a month or so I have a tidy, and allocate then to the right place in the hierarchy. Currently I have two drop down screens of unallocated tags and no easy way to drag and drop them into their right place in the hierarchy.