I love the tool and have a few of them.
In order to structure my content I would like to be able to move my notebooks around in my folder.

I have noted some storting to take place but,

Tag a set of favourites and show them on top in my folder or a dedicated folder would be good
- sort by drag would be advanced
- sort by keywords

I would also like to be able to merge notebooks in a way that I can drag my source on target and via control question be able to move (merge) all pages from source to the end of target.