This idea is fun and creative.

My original comment was a bit flippant. However, I do feel like it did bring up an issue in combining comic book characters with belief systems of people in real life that has impact on their actions.

Separating the world into good and evil characters doesn't reflect real life and real people. The characters in the comics are personifications of concepts. No person is just good or just evil.

I'm sure no one here is trying to pretend that this reflects real life and that this is just a fun thought experiment. However, having the purgatory concept itself is one of the ways that people over the years have justified villifying people. They can pretend that there are good and bad people.

In order for there to be pure villains, you'd have to assume perfect knowledge, perfect experience, perfect ability and perfect free will. No one has that.

When comics turn into movies, sometimes the villains get more fleshed out and people can relate to them better. That's sometimes when it's less fun to villify them.

Mixing caricatures of good and evil with the real life belief of some people in the concept of purgatory has me a little uneasy that people might actually think that it might be an accurate reflection of real life. It is not.