My team would love the ability to add labels or "group" folders / lists from different spaces to have a high level view of projects for specific teams.
For example, we have our spaces setup as Client, since we have multiple projects per client. We have three "teams" Creative, Web, Media. We would like to be able to see all of the "Web Projects" in one view.
We are currently achieving this by creating a single task and giving it a custom field of "Type" for web, creative, media and using that to pull a list.
What our higher ups are complaining about is the ability to easily see a full list of web/creative projects currently being worked on.