Which “Quad remesh” title do you mean?
A new proposal for the “Quad remesh” tool
A major problem of the ! _QuadRemesh tool is that it shrinks the output SubD quite a lot, thus it no longer follows the intended shape and size. The reason is that it aims to snap the control points of the output SubD to the input geometry, which causes the shrinkage after the smoothing operation.
My proposal is to add an option to follow the input geometry by snapping the mid point of the SubD edges instead. However, one important exception should be …
I posted this in the following topic to keep track for the developers for further improvement of all future Rhino releases.