I read in the following post that upgrading your systems with trade shouldn't be done on all your planets. I usually upgraded my systems with the trade development options. I was wondering what effect that has on your Empire then.



If you only upgraded your Home planet and some production systems, are maximizing your Empire's potential? Are you then playing too conservative? Or is the deduction from trading FIDS on mediocre systems just not worth the profit?



How exactly are systems trading? If one system is low on one resource, does having trade help bring in that needed resource? Or is trade strickly profit from other Empires?

Trade only gives Dust and Science, on empire.



You can get one trade route per discovered allied system, restricted by your own systems' maximum routes. AFAIK, there's no way to manually select which system trades with which.



The reason you want to restrict trade to a few systems is that corporate heroes can increase trade revenue tremendously, and you want that bonus applied to as many of your (finite) trade routes as possible. Plus, obviously, the fewer %bonus improvements you can buy while still having it apply to all of your trade, the better.