Syntax for Onedrive.admx edits - DefaultRootDir

I'll have an article out next week about my approach, but in summary, let's say there's one folder redirection policy already in place. I'll create one Onedrive GPO, that contains settings to create a custom environment variable, create the Onedrive sync folder, set the Onedrive settings, and change the folder redirection to the new location (including moving the data). The GPOs are filtered/denied etc so that when users are added to the appropriate group the old one stops applying and the new one applies instead.

Separating them makes sense if it's a more complex environment or requirement, but for most cases the "migration" to Onedrive just  becomes a matter of dropping users in the group, advising them to launch Onedrive and complete initial setup, and monitoring network impact.