I was looking to have 50% cheaper (production and gold) units to make it easier to war before advancing to another era. I always find that by the time I have an army, it's time to upgrade it, and I can entirely skip a unit without using it. Extending research brings more problems than it solves, like early great people and easy golden age.
There is a mod that does this, but it also reduces building costs, which makes it easier to progress through the eras (building faster science and culture buildings, and growth buildings).
There is a mod that does this, but it also reduces building costs, which makes it easier to progress through the eras (building faster science and culture buildings, and growth buildings).
