We all know the great local vs universal eco debate that is all the rage around here. Here my proposal. Make eco local and have a way to transport storage units from planet to planet.
From the "Should resources be tracked by planet/moon" thread linked above: Some people propose basically the same thing in that other thread, regarding "transport supply ships" to get resources off-world to other colonies.
Seems like a perfect fit to me. Deals with local VS global economies and you suggestion regarding storage is tied directly into that, over the course of the thread's 36 pages there have been many suggestions and discussion regarding How Local Economies could work given the planet based expansion mechanic PA is going for. The idea of being able to bring or transport resources to aid in starting up a new local economy as you suggested has been discussed as a big part of that. Mike