I have checked the feature requests and searched the forum and can not find something similar.
It would be great if it was possible to create a site with a not set option eg email
Also, the ability to remove a role eg email if the site does not have or need this service
Example
Website #1 only has the APP and DB role but does not need email but the server role is assigned anyway.
The feature under Move Server does not have the option to unassign a role as well, so the role must be assigned.