Have a Teams Admin - it would be very helpful if there was a Teams Admin that had the ability to edit team members without being part of that team. This issue limits our company from using Glip because of end user trust that everybody is included in the Glip message vs email groups.
This is a 9mo post but I just wanted to voice my support for Dan's idea. As the admin for our system, it's very inconvenient that I'm not able to add/remove users to groups created by others or that I'm not a member of.
I continue to think that this is a good idea (after all, it's implemented in virtually every other system out there). It seems ridiculous to me that as a Site Administrator, that I don't have the ability the manage team memberships for teams created by other users. I can handle the argument that in a small number of cases that the current approach would be preferable (i.e. if I had a super-sensitive group and I wanted to manage membership myself, rather than allowing IT to get involved) but I'd consider this the exception rather than the rule.