Are tech costs in Atomic and Information eras also locked? I was thinking that Atomic era techs could be 25% more expensive and Information era could be 50% more expensive (those numbers are just examples, maybe should be different). That way planes would have higher impact and late game units, like XCom, Giant Death Robot etc could actually be used, because right now it's not really the case, unless there is no victory conditions enabled besides Domination. It's not the first time when I hear on this forum that late eras passes very fast. With that, other victory requirement should also be increased, like amount of tourism needed per enemy culture and number of votes for Diplomatic Victory.