This is awsome and could come in handy 76% of the time and it doesn't just need to be
a convenient transport it could also be used to escape your station, ship, earth base etc. If your under attack. For the earth base it will launch you vertically into the air
I always liked the ICBM mod, and thought it would be cool if that mod had a type of missile that could fit the player inside, but the rest would act like the normal missiles did. Depending on which launch pad you used would decide how accurate your targeting was. Of course it would have been extra cool if it had versions of the pod/missile like I mentioned above (with cargo, etc). Alas it never happened, and the author of ICBM decided to drop the project (I think he moved on from Minecraft modding).
If this ever gets added to GC (I'm still hoping), the code from ICBM, which Cal made open source last I heard, could be used for the over world portion of the addition. The droppod/capsules shouldn't reach space of course since that would invalidate the need for rockets.
It would be a neat way to get around the overworld or send supplies to your friend when they ask for things they've run out of. Just load a capsule and drop it onto their base from space or launch it across the overworld. I know I know there's already the launch controllers that let you do that with rockets, but I don't like using those in multiplayer. Especially on larger servers. Since they rely on a numbering system, it's just too easy for people to mess up your setup (either by accident or on purpose) by numbering their controller the same as yours, or filling your storage with random crap by setting their destination to your pad.