our client is using the Multi-Site Management (MSM) features a lot.
When checking component content in a live copy, they need to break the inheritance of the respective component first, so that they can access the component dialog. Afterwards they need to restore inheritance again.
Business Value: This will reduce risks with accidentally not restoring inheritance and also will speed up the content QA process significantly. In AEM/CQ 5.6 (with Classic UI) it was possible to access/open the component dialog on a live copy with enabled inheritance.