What I’d also love to see is easy reprojection of a retopologized (not remeshed) mesh, including vertex colors, like ZBrush: ZRemesher, then subdivide and Project All.
Quadremesher is coming to Blender soon, but to reproject detail you need to use the Shrinkwrap modifier each time, which doesn’t support vertex colors, and Shrinkwrapping isn’t an easy process to do multiple times during modeling.