I noticed that in Retribution when a planet has high Social Construction and nothing new to build anymore the Stored Goods stack higher and higher.
Is it true that still only one project per turn can be finished? Because it seems so. In my current game (pre-3.6 but with opt-in) I can on some planets only build Aid Economy and Station Garrison that cost 75 resp. 50 construction points. But Social Construction on that planet is 136 atm, so every turn the Stored Goods increase by the difference between Social Construction and Aid Economy cost.
Is there a way you can use your Stored Goods in such a situation?
If not, I would suggest to introduce more than one "Aid xxx" project with different costs. Right now Aid Economy costs 75 construction and yields 25 BC. There could be another variety with 750 cost and 250 BC yield and still another with 7500 cost and 2500 BC yield.
Or you make it possible to ferry away excess Stored Goods with supply ships.
My planet in question has accumulated 8652 Stored Goods for which I had a lot of uses elsewhere ...