So after laughing about the Freespace dreams thread, I actually had a Freespace dream where I was in a ship flying through a planetoid that was water. After flying through, I broke through the surface and was in space again. I started thinking about how challenging this would be.
Right now, FRED does seem to understand creating 'zones' that operate within specific coordinates (ie Asteroid Fields). How difficult would it be to create something using the same rules, only instead of containing asteroids, the zone you fly into was a gas (like a nebula), or atmosphere, or even a liquid planet. This could make space-to-(atmosphere, planetoid, etc) possible.
Just a concept, but I was intrigued by it.
Discuss.