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I hope things are going this way too, i dont think 3D can ever be as easy as 2D to modify but the approach of 3D is to provide a more rich information source, this means more work... but it should also mean more result, be it in better visualisation of use of space, better ergonomic design better surfaces for manufacturing etc etc.
The model on the image i have posted is almost as easy as the 2D vector model to edit, I simply select a 3D curve, then a control point and i move it in 3D space. (this can be done in a 2D view of the 3D model for ease of use) the effect to all other curves is automatically propogated and under your control.
I am busy at work at the moment but will post under this thread some ideas of how this approach is being used by forward thinking yacht designers.
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