Changing official plugs is frowned on anyway, and not really an option here. It would just be written over on the next update.
You can change how the tilemap is drawn as another method. The texture would have to be offset, and put pieced together on the map.
As tiles it would be mathematically useless... pretty much.
So basically it would be for looks alone.
What would be useful is a helper plug that does the math and converts normal xy to hex xys.