Comment 32 for bug 1251393

I thought about it a bit more. (taking into account that polygon edge-cuts might now be supported)

There really needs to be a decision made. Do we ever want to support things like edge connectors (which depend on having partly defined edge cut features within the footprint)
Or do we want to use polygons to be able to define edge cuts for boards.

I don't really see a benefit of using the polygon feature for defining edge cuts. It can not have arcs in it and it does not allow footprints to define edge cuts. (Both of these are essential for anything more complex than simple boards)

So maybe a better approach would be to make the poly-line tool more powerful instead of using polygons for this sort of thing.
Current nightly already has snap to endpoint for poly-lines. The only thing missing would be that if you move one endpoint where two lines overlap that both of them can be moved as if it is a polygon point.