I don’t know, I think this is very unrealistic. I couldn’t do this although you consider me being a smartass But I could remodel this in about 1-3 hours… So thats why I would do it like this.
The user requested for a mesh to surface conversion. And he is not the first one. This is actually a very common request in this forum. And in all these years Rhino/Grasshopper exists, nobody made it work ( at least as most people would expect a usable conversion.)
The reason is simple. It is difficult! How should some average joe do this? And even if someone can do this how long should it take? 3 years?
It is a big problem to solve, and I never negated that there is software doing this sort of conversions. But still even the best and most expensive software is not doing it good enough for most professional applications.
Creating patches with 50 to 70 spans? This is exactly my point when I’m talking about brute force. A surface with this specs is so bad that it makes any conversion almost useless. If you work with this heavy data, you could stay with meshes and even get a better outcome in terms further development. The patch command (at least from my experience) is used to fill small gaps, for instance in the back of a model to quickly close surface model for instance or at places where a good surface representation is obligatory.
The reason why most people want this is actually another: Often people can better model with a polygon modelling software or they using fancy GH scripts creating awesome mesh geometry in 5 minutes. But then they notice, oh wait, how do I make it a surface representation which for some reason is required for further processing? Now they hope there is some magic algorithm. And no, there is no such thing. The truth is the opposite, everything related to CAD is difficult , time consuming and has a step learning curve…