I would recommend the implementation of an extremely large and expensive storage building (maybe 8x8 tiles) that holds huge amounts of ressources. Because, when you specialise your colony on one ressource, the storage always fills up and you maybe have to sell for a bad price on the market. Megastorage Facilities would make trading and producing easier.
https://www.my-colony.com/colonies/Ru093inr/
We need this for sure. I've also suggested reworking the galactic board of Trade and adding a Galactic Stock Market to make trading more competitive.