I'm really excited for this project!
Do you think the 3D engine you've written here is something that would be reusable for other projects? If so, and if it was something you were interested in, I think it'd be a great boon for the community if you were able to open-source that portion of it! Obviously I understand you're in the business of making a commercial product here, but if nothing else I think it would be really cool to see the details of how you got this to work!