[InfStorm]

Well, one think to ask, "What is the difinition of Planet?"

Is a planet one of those things that orbit only around stars, or do you include things like the "forest moon of Endor" or the "Pirate asteroids" as "planets" as well.

Then, do you have a colonize a planet to get resources off of it?
(can you build mining shuttles or the Red Dwarf style ships?)
Are you going to be able to grow food on your space ships/stations?
(Do we even care about tracking food?)

How many resources does the game have? Why someone would want a planet would vary greatly depending on the resources of the game.

What level of detail will you have on a planet?
Down to individual buildings, or build by 'cities'?

All these questions need to be thought of...