So here is my response to your post from the perspective of the way I like to look at things:

If you are going to claim that a thread is "semi-philosophical" do some philosophy. Work out the implications of your initial postion first to see if it makes any sense. Then to see if it gets you where you want to be.

The operative word fragment here is "semi". I have no desire to get into a real philosophical discussion with anyone. I tend to see "philosophy", as a serious school of thought, as not much more than a good way to get paid for a lot of mental masturbation. I posted this thread because this discussion is interesting to me. Nothing more, nothing less.

You say that one would "see, hear, smell, etc. all of the things you had done". In other words one would replay ones life. Would that be in real time or burst mode?

In my hypothetical after-death scenario, terms like "real time" and "burst mode" are irrelevant.

Then you go on to say that one would repeat "everything that every other person your actions and decisions effected in any way while you were still alive".

if you take the butterfly hypothesis seriously you'd have to relive the lives of everybody on earth. Perhaps every sentient being in the galaxy, universe, whatever.

That could be a very enlightening experience, don't you think?

Even assuming a minimal average lifespan, billions of earth lives will require billions of years to repeat. It wouldn't take a large average lifespan to exceed the currently expected life of the known universe.

In my hypothetical after-death scenario, there is no such thing as time. Time is irrelevant.

The Key question however is would you be aware that you were repeating?

Yes.

If you were aware, it sounds like the most horrific case of multiple personality syndrome imaginable in the relives no matter how you behaved in this life.

Possibly. Or the life just lived could be just one of many experiments in the art of living life. Next life could have adjustments made to it as a result of what is learned from the most recent life, and the experiment is continued.

If relife happens to everybody, then at any given time everybody will be reliving almost eveybody else's life simultaneously. If everybody is in some sense everybody what happened to individuals?

In the hypothetical scenario you are describing with this question, it looks like eventually, people would begin to understand "separateness" as being an illusion. Just a guess though.

If you envision a human as a body in the control of one owner self-consciousness that is unaware of billions of other consciousnesses who are along for the ride, where does that get you?

I'm not sure what your question is here, but if you're asking what purpose could it serve, maybe it helps set up a framework for consciousness to have experiences it couldn't have without this perception of "separateness".

You cannot sort out the practical implcations of a belief until you sort out its implications and its nuts and bolts.

Yes I can. This thread is not work. This thread is play. I can pretend anything I want to here.