TLR
BGS and Economy are static, build them properly and the galaxy will feel dynamic.
What makes you think it is static?? It's a game world with billions (trillions?) of NPCs running their businesses. Why would the ruminations of a few players have a drastic influence on that? Or is it that you (like so many others) want a game that revolves around you? Also, you must not have looked at the forum much, as historically there has been a lot of threads about trade routes drying up and/or reappearing.
Patch 1.4 appear to come with the possibility for players to influence the expansion of minor factions into Powers. Hopefully that will help to give a feeling of influence.