First, i must say GREAT WORK with Dust3D my Friend! n__n
Second, i have some suggestions… and some stuff that i found!
The way your software works is GREAT, i see that you wanted to make it really simple to make possible to create 3D Models REALLY FAST!
Could you make a option to work with it like ZSpheres? I mean, to make the model appears as you are going adding Parts of it!
Since your Program is based on the B-Mesh Paper i found some links that maybe can interesting to you…
Here is a GitHub link of some ppl that worked on a Standalone Application Implementation of B-Mesh code.
I dont know if there is some code that you can use in Dust3D, i dont even know if this is Open-Source code… Anyway, for sure you understand of this more than me.
Here is a Link of a Forum that says more about the Application(the language of the forum is French).
Hope the links can help you with your work(even if with just a little), GOOD LUCK with your WORK and THANK YOU VERY MUCH FOR YOUR EFFORTS to help People to MODELING FASTER!!! ;D