That raises a question...
I almost never play on large maps because of the time involved and how annoying the diplomacy screen is with > 8 opponents.
Did C3C do anything to address this?
There's a VERY simple solution. The current "More Civs" button is needed to allow you to get various combinations on screen at once (for viewing MPPs, wars, etc...). They need to add a second button "Toggle Civs" or something like that that switches to the second page of leader heads - all at once.