To be honest, in future will be two grand campaign in mod (Akallabeth and Last Alliance), because I have plan to expand this mini-campaign in updates. I mean e.g. when I will prepare Lindon army and building - mini-campaign receive Lindon territory
About Realm Divide - I only changed requirements that are now unachievable
And no, I can't enlarge Numenor Island because would be to big relative to Middle-Earth (when I will add Middle-Earth on map). Campaign map has resticted size (I'm trying take off this restiction, but I didn't do it yet )