Windows 10 - Mandatory Roaming Profile (on shared folder RO)

A roaming mandatory profile is a read-only user profile stored on a network share that acts as the default template for all users. 

Differently from roaming profiles you need consider that all changes made to a roaming mandatory profile are lost upon logoff.

With this approach you can have a customized centralized windows 7 profile

You can go deeper on this argument on official Microsoft Link:

If you like you can review this step by step article with GPO creation explanation too: