It would be really nice to be able to "group" Quick Filters in the Rapid Board, creating some sort of dropdown. Best solution would be similar to the filtering implemented now in the JIRA Issue Navigator's simple search.

Background:

• when you have to filter for a lot of projects and more than 3 team members, it gets very messy and cluttered, especially on smaller screens (covered by GHS-9272);
• at the moment Quick Filters have to be modified every time there's a change in the team or project priorities.