Why have a separate section for shared boards? I’d want to see all boards available to me in one screen. Move shared boards to the main My Boards section and add a filtering system to filter different types of boards.
Add icons to the board cards so you can see if you have shared the board with others, which boards was shared with you, and categories/tags. Then you can filter by these types.
Add the ability to drag n drop boards into folders easily on the page or side menu. Create a system archive folder or section, so you can easily archive old boards and keep your boards page clean and uncluttered.
Add a view option, to view boards in different ways, like cards view all, list view all, view by tag/category etc etc
