(hadn't heard of the 12th, that's a new one for me, haven't read up on it in a while)
IF (big if) there is a creator, multiple realities, I think our counterparts would be us and not really counterparts. When I think of the present and attempt to put it into context since the beginning of man to the end (if there is an end) our experience is infinitesimally small. Since we are just a collection of our experiences it seems rather unfair so to speak to miss out on all of that and whatever else there is. While I don't think we would directly experience them, rather experience them as an observer which as a "higher being" that experience would probably be just like what we experience now, just as "real". when I try to comprehend the vastness of this reality and the possibility of being able to explore it all it makes sense to me as it would be a purpose. I think if you had everything you ever wanted, you'd cease to exist as you'd no longer have any desires or purpose. I don't recall which religion believes you are reincarnated until you desire nothing and simply disappear, something like that anyway.
as a multiverse, reality being one could live any life that existed or will exist, maybe that's what we are doing for the experience. hard to believe I'd do this again though ahaha
one of many realities, sure I would say that's a possibility
the thing about good and evil....... again if there is this progression and assuming we only have 1 mortal life, what we do here is so trivial compared to the infinite. If there is a biblical heaven then same thing, whatever horrors have been experienced here are trivial to the joy or whatever is promised in heaven.
Consider a baby getting their first immunizations, many times they scream and cry, often if the parents are new they get upset as well, until I explain the context that, that experience is the worst thing that has happen to them (the baby) in their entire life (of usually 7 weeks) So if there is something more I think that analogy would be the same for us.