I posted this in SW Mod but a repeat:
For those unaware Uzii made a few great planet mods (Oceanic, Urban etc) I think these would fit great for star wars maps/mods as it would allow more realistic depictions (Endor, mon cal, coruscant).
I'm not sure how it'd work just yet to dictate in forge a planet is oceanic and the like but i'm sure its easy enough after some tinkering. If I figure it out before hand Ill be sure to pass it on.