I don't know about hotkeys, someone else can chime on that, but you can add an icon to the Toolbar at Top or Bottom, Zones, and it will have a drop down menu with your Zones in it.
As for displaying them I don't see why you couldn't have a tab for each zone, should work fine. Just switch tabs, then switch zones. EDIT - nope doesn't work this way; may be a handy feature to request though.
Can someone clarify the sync feature; what is the timing offset in ...milliseconds? Never seems to sync up right for me, but I have only fiddled with it a bit.
DC