And I second what Don says about asynchrony. We have been missing for a while Susan Hill here on this topic but if she drops back in it would be interesting to see you two exchange ideas given that this is such an area of interest to you both.
I’m afraid I have to essentially agree with Matt at this point. I have not found anything further that makes Epicurus’ theology more robust, integral, or informative to human life. He does not seem to have developed much by way of a praxis, so any further development would require comparison with other, possibly complementary theologies, or innovation. Epicureanism is missing the kind of in-depth philosophy of mind and consciousness that eastern schools have, so I do see anything like transcendence, moksha, or enlightenment being part of this package. I really think a mystic must look elsewhere..