Welcome Morgan. You're definitely right to like Epicurus as a fundamental revolutionary of his time. The main revolution i would put with him is his fundamental optimism about everything! I think it's his best quality.
Take a look at Plato and the Skeptics, they thinks philosophy shows we can't trust anything around us and need to trust in either a higher power or nothign at all.
Many Cyrenaics teach that a wise man is fundamentally unhappy and that pain and death destroy happiness, Hegesias says happiness is impossible and the woes of life destroy it, making death as good as life, and Theodrous that friendship is proven to be foolish and the wise man can't have friends nor believe in conventional morality.
Aristotle, he says chance can destroy our happiness by bad luck and that we need glory and political power to be truly "flourishing".
Democritus, that we are not in control of our choices and are subject to the iron grip of fate.
Epicurus by contrast is a complete optimist, and i think it's the reason i like him so much, he says that philosophy is fundamentally liberating from our false assumptions and how easily happiness is acquired and pain endured, how we can trust what's around us, that we are not subject to fate or to the gods, and we have no need of great glory for flourishing.