@Hehe64 ,
Al these problems are systemic with Pepper 2000's modmod that gave us the 5 New Eras. It was never tested just accepted at face value Because of all the effort pepper put into it. I reduced Glaring OP problems in the CIVICs as a quick fixfor the Civics.. But the rest of the Bldgs and other facets were never adjusted down to reasonable levels afaik.
I don't know if I have the time anymore to look thru all this. Bldg progression was started by HydromancerX at 5% increments. But by the time u got to Modern Era (Pre Pepper's additions) the levels were 5 -8 times higher in results. Then Pepper took those end values for those bldg lines and increased them by More 5%increase/era. We had production over runs that caused errors because the highest numbers were reached for the limit too fast causing it to flip to Negative values.
Right now the game is only really balanced thru Ren Era maybe thru Industrial Era but after that... it's a crap shoot imho.