Ideas

I would like to know if it is possible to do or if two functions could be implemented that I cannot find a way to do in Blender.

1.Is it possible to reverse the direction of the invisible edge of a quad? I mean the internal edge that is created automatically.

2.When I am retop I can hide the faces that are behind, but not the wireframe, is it possible to hide the grid that is behind the model? For retopology it would be great.