What you lot have done is nothing short of amazing ground breaking work and a solid base for natural sketching! With real and accurate measures, I'll add.
Take a deep breath and imagine the following:
Combine all your efforts and automate as much as possible and I think something like Catia "Imagine and shape" or "Natural sketch" is within reach!!!
Check Youtube for inspirational videos.
Tallyho n' cheerio!
Edited misspellings...