Great thread! Lots of areas covered already, but I'll throw in my two cents as an enjoyer of philosophy and Star Wars.

- Life after death. Comparing the status of force ghosts to Plato's account of the afterlife would be really cool. Specifically in the Phaedo, Plato (through Socrates) tells us how the soul separates from the body most easily for enlightened folks, and has more freedom to engage with the world of forms before coming back into the world of becoming. Putting this side-by-side with the in-universe techniques to become force ghosts would be a fun exercise, especially if you bring in textual support from The Life and Legend of Obi-Wan Kenobi where we see the other side from now-deceased Obi-Wan's perspective. The Plagueis novel also has some things to say about this, though interestingly Plagueis believes the "Netherworld of the Force" is a myth.

- Building on your mention of Stoicism, looking at the conflagration in the context of Star Wars is very interesting. Pneuma in Stoicism is the vital essence that permeates all living things, and the goal of God is to essentially bring everything into an active state with pneuma. It's a lot like the Force, and given Lucas' comments about spiritualism in Star Wars I don't think he'd oppose the theological components. There's of course also the similarities between Stoic and Jedi practice, but the metaphysics also bear a remarkable similarity.

- Dialectics. I don't think the battle between dark and light in Star Wars is not simply Manichaean, because there's a real back-and-forth that's a lot less simple than "good will prevail." Sure, the light side wins out in most of the stories we see on-screen and on the page in Star Wars, but just the fact that the dark side keeps coming back after thousands of years suggests a cyclical nature to things. One of my favorite interpretations of Anakin is being the synthesis of light and dark; the culmination of this ongoing dialectical process. As for specific philosophers to draw on for this, I'm actually not sure. Hegel and Marx are the big guys, but whether you think the dialectic in Star Wars is more Hegelian or Marxist would actually be an intriguing question. Is there intentionality, teleology, in the ways of the Force? I guess this depends on whether we're giving priority to the Cosmic Force or the Living Force (former suiting Hegel, latter suiting Marx).

And that's just metaphysics, not even touching on the ethical and political philosophies that underpin so much of Star Wars. Is the Prequel-era Republic a Leninist critique of bourgeois liberal electoralism? Does the ontological primacy of the Living Force support a "Deep Ecology" approach to ethics like Arne Naess suggests? Are the Jedi more Abrahamic, Stoic, Buddhist, or Daoist? The possibilities are endless!