I am leaning towards a modifiable engine, accessible via script, but something like that would probably be aimed more at the TGC community.
Do you finally use BlitzVirtualMachine for the scripting? If so, according to its license terms, you cannot use BVM for something which would be a "replacement" for Blitz. I think that a 3d gamedev system is a replacement for Blitz.Really nice screenshots here Josh, can't wait to play the game!