To change the email address of the group, follow the best answer here: https://answers.microsoft.com/en-us/msoffice/forum/msoffice_o365admin-mso_exchon-mso_o365b/how-to-add-an-email-alias-to-an-o365-group/79d94383-442a-4e3a-ac62-4ff1ea8af962.
We’re working on renaming the Team Site. Stay tuned.
An error occurred while saving the commentAnonymous commented
It's important that we can rename Teams, and their underlying components such as group and URL reflects the change. Having a new group without a New URL is NOT LOGICAL!!