Associated team is purely a legacy remnant of the previous way teams and projects used to be connected to each other. The “new way” is now by making a team a project member. The key point being the way Asana wants you to visualize it is that teams are now groups of users, not containers for projects. We all need to get used to that change because that’s the current Asana design. Yes, it’s a big conceptual shift but does have its merits for sure.
So no, I would not submit any enhancement requests around Associated Team; based on my conversations with Asanas, I am sure they won’t be doing any more work there.