Don't change team display name
The team's Display name should not be changed by the owner.
Should be controlled by the administrator.
Chris Hoche commented
Agreed, it would be useful to set an attribute to block Owners from changing Team Names since this can break more backend pieces like Sharepoint links etc.
Or only allow the displayname to be change, but not be tied into the paths for sharepoint etc, allow purely cosmetic displayname changes.