Hi @masaki,
Thanks for your feature request! We’ve thought about adding a Kanban view, with having tags as the different columns. You make a good point about spatial memory and the broadsheet view.
This along with Tabletop / Whiteboard View and an Table View (almost like a database – but made in a Supernotes way) are also front of mind. These are all big features and if anyone has further suggestions on how a Kanban view could work do let us know below.