Same problem here. Please add this functionality.
+1. This would be a big help.
+1 yes, this would be tremendously helpful!
Teams are a useful way to manage repo access which is arguably even more important for outside collaborators than for people within the organization. The workaround of inviting outside collaborators into the organization for repo access management via teams is bad because there will be a period of time when they can access all the repos in the organization! If somebody then forgets to convert them back to outside collaborators it poses an even bigger security problem for the organization.
+1 This would be super useful. It makes it annoying and seems dangerous to need to send invites to outside collaborators for every repo they need access to. It increases the risk of accidentally adding the wrong person to a repo.
+1 definitely we need it
+1 same need here.
Add external collaborators to teams is essencial.