Is the subsurface UV mapping problem being addressed?

Is the lack of development (and lack of response) due to the fact that nobody’s willing to mess with the kernel c++ code?
I love the new display modes (thanks to mainly to openGL) and this subD stuff seams a lot like Creating smooth meshes from pipes, like TSpipe had in Tsplines? - Grasshopper - McNeel Forum
Is future development only going to happen on top of the same old kernel?
Can we expect to have this working tool improved or just painted over??
The new QuadRemesh is cool but isn’t that available has open source here QuadriFlow?