It would be great to have the ability to place calendars built in Calendar app into folders. RIght now, it is a long list and not very organized. Filters are a good step, but folders would be a leap!
Additionally, it would be cool to then grant permissions based on the folder (if needed).
seconding this! I am a portfolio manager and create calendars for all our programs, as well as the portfolio as a whole. It is such a pain to scroll down the page of active calendars currently, or even worse, directing the program managers to the calendar that is relevant to them in the shared calendar view.