I don't mean to rain on the parade , but doesn't "revealing through Eureka" kind of defeat the purpose of hidden techs ?
Yes. They should have made it so eureka’s just increase your chance of getting that tech next. Or randomized eurekas somehow. Hopefully they decide to offer an option to turn them off. It defeats the purpose otherwise.
Eurekas need a rework. I get it if playing my usual speed where an early tech may take 350 turns, but on standard speed techs are like 1-12 turns.
Maybe rather than a boost, they should lock certain techs behind them. And wonders. And units.