Freedom bonus gives you +50% to GA, I would consider that a unique policy change.
But it's unique to Freedom. And because GA now also increases culture produced as well as gold and hammers, it pairs nicely with the Freedom SP for small civs going for culture wins.
Basically the strat is save all your Great Artists with some planted for tile improvements along the way until you complete Freedom tree and spam the GAs with the GA bonus and double tile GP tile improvement bonus to power you to victory. Increadibly powerful when paired with Chichen Itza and a capital with hermitage, broadcast towers and full on culture multipliers.
But it's unique to Freedom. And because GA now also increases culture produced as well as gold and hammers, it pairs nicely with the Freedom SP for small civs going for culture wins.
Basically the strat is save all your Great Artists with some planted for tile improvements along the way until you complete Freedom tree and spam the GAs with the GA bonus and double tile GP tile improvement bonus to power you to victory. Increadibly powerful when paired with Chichen Itza and a capital with hermitage, broadcast towers and full on culture multipliers.