Sorting notes by Updated date is the default and it is very handy.
One small feature I would like to see if sticky notes. The ability to keep a note at the top of the notebook always.
In each category I have one general note, one scratchpad or unorganized list I wish to access quickly. Right now I add a + character to the title so I can see it easily however I would like the ability to keep sticky notes at the top of each notebook.