I'm taking steps to support castle X3D files and later on direct interaction with the castle scene graph inside my editing tools - I've got a lot of work on so I can't give a timeline yet - but I'll be keeping Michalis apprised of my progress.

I agree that a good editor would be a great addition to castle at this stage - it would speed up prototyping and allow people to scale their ideas/scenes rapidly - castle can handle *a lot* more than even its most impressive examples/demos give it credit for and good content creation tools make a world of difference - providing you have the art resources to call upon that is