Cool beans! So the DOS KS has already hit 1/4 of its target in day one. And they gave me a reply about the editor....
Yes - we're going to allow you to import your own artwork & sound. We don't have any DLC plans for the moment but al the content that we provide can be used in your own campaigns. The editor will also support integration with Steam workshop btw.
If we do release new content for the editor, it will not be a DLC.
About importing models, objects and textures: we are looking into it, but yes, that's the idea. Wouldn't want it any other way.
Sweet! This could end up the new NWN or close enough to it. So stoked!