Something to keep in mind: let's say, theoretically, that we cut down regions per continent to about 70... How many realms can viably sit in that space? On AT, the top 3 realms total 81 regions (9 of the smallest to get 80). On Dwi, the top three total 77 regions, or bottom 7 for 72.
Do we really want continents where there are only a handful of realms, somewhat like the Colonies? Where everyone only has like one or two neighbors? Would that really be an improvement?