Yes, but they would still have to edit the collision box they throw in with every rock. (Maybe I have the wrong part. e.e)
In each rock, they have a mesh box that they put for you to stand on. Take that out, and you cant stand on it. With the shapes of the rocks, and re-sizing, it would be tough to have one, unless someone actually wanted to take the time to shape one, and make it.
All rocks can over-lap now, but they still have issues like that, even when over lapping.