Advancing Slides Functionality

I really like the remote-control functionality where a presenter or organizer can 'give access to the keyboard and mouse.'   However, it would be great to isolate just the keyboard so multiple speakers can advance their slides using one master deck.   So, in theory, the organizer could always 'own' the master deck, start screen sharing, and allow keyboard sharing so at the appropriate time, each speaker can talk and advance their own slides seamlessly and not have to worry about 'screen share', 'stop presenting' 'pass to new presenter', etc.  I also think being able to upload the master deck into a private library could be useful so it's contained within the tool should the organizer loose connectivity and the other co-organizers could take over.