Linking media screens is a very useful feature, Personally I am using it to have multiple screens around my condo so people can see the screen without needing to run back to the main room and watch from various spots within the condo - however you are unable to add / remove or adjust playing media through a linked device, needing to go to the main player to make any volume adjustments, add new media or vote skip.
The ability to allow media control from linked players would be greatly appreciated! bonus points if its a toggle option for any builds that may suffer from this change. (Not sure what those would be, but more options is always appreciated)