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.sk commented
This is needed
Thanks for the feedback. We’re addressing this feedback by promoting the ability to manage group membership into Active Directory. In the near future, an admin can identify a security group that includes the users allowed to create Office 365 Groups form all endpoints. Then you can manage the membership in that security group as any other security group in your organization.
Note that the initial configuration to identify the group will be done in powershell.sk commented
Better management/admin tools are needed for Groups, approval workflow would be fine.
Currently disabled because impossible to use.
You can now use a dot in the email alias. We are working on providing the ability to edit the email address of a group after creation.
For the ability to edit the email addresses, we now have the following roadmap item: https://products.office.com/en-US/business/office-365-roadmap?filters=&freeformsearch=27891&featureid=27891