#3: What we know about it currently: "It's based on prolog and allows all kinds of logic manipulations which works well for storytelling (which is heavily event driven). There's also a scripting component for the more procedural things (like npc schedules). The coolest part (imho) is that it all works in multiplayer too."

#4. They've said in the Kickstarter comments that you can mod the original campaign (the editor will make a copy of the original campaign and you'll be modifying that local copy).