retopo's weld as streamline tool

I mentioned this before a year ago on a side note: it would be really great if the welding from the retopo tool could be made somehow into a streamline tool and integrated into the general weld tool as a method. That weld is so great and much better than the other ones inside Nvil. In retopo mode the function is that I move something and if the loop/edge/vertex is near another component I hit the w key and it collapses the moved components into them. I'd like that to work similar with selections. So I can use move, for example, then hit the weld hotkey for fusion. Maybe it could also work on edges while moving polygons.