It would be great to be able to have custom team/space creation templates which users can create themselves or at least an admin can create centrally (control hub).
For example, project management, it would be great to create a team and have pre-defined spaces created as part of a template. This saves the repetitive work of creating spaces within a team and helps promote consistency.
Other use case examples include education, research, etc.
This is already available in one form or another with a competing collaboration tool, Microsoft Teams.