1. Add extra features to edit tables and their contents as in and Excel.
2. Add text editing features (like adding symbols & other kind of mathematical stuff and like adding headings, sub headings, etc..) as in Word
3. Add 1 more hierarchy level in organizing notes like sections / super stacks
4. Add a sort option to sort notes and notebooks manually
5. Remove the section of recent notebooks (or else it can be customisable)
6. Add notebook description in addition to notebook name while editing notebook details in windows version in which the customer can able to add some introductory word or any kind of description that they needed (note that it should not be mandatory)