How to control Quad Remesh in Grasshopper?

Hello

I would like to know if there is any way to control quad remeshing of a surface. I noticed that just a slight change of guide curve makes a big difference on the outcome. How I learn what is behind the algorithm to understand the behavior better and thus achieve more expectable results?
Would be nice to be able to use guide points as well as guide curves. Or to use “nice looking” tri mesh as a geometry to quad remesh?

Thanks

initial curve shape

slight change made