I personally thought that the "Distant Planet" was a really stupid concept for a Pikmin stage. Why couldn't they have named it after one of the stages? I think that the Impact Site could be a very similar stage to the distant planet, with a few exceptions. One thing that could change would be that there would be something instead of a bulborb at the right. Maybe a wall that could be broken with enough damage or another piece of scenery. The ship in the background would still remain there.