I come from a long line of seance spiritualists dating back to my great grandmother, and likely even beyond. The sensitives in every generation of my family (myself included) tend to be plagued with strange, apparently ghost-like phenomena throughout our lives. For me this just raises the emotions of wonder and mystique. Otherwise, until I can get real information out of it it remains a creepy novelty.
As people begin to form their own ideas of afterlife, I believe it lacks any metaphysical reality....but it is the formation of a personal myth system. It can demonstrate to you the values you have, and it can help express the poetry of your spirituality. I think this is cool. Sure have supernatural forces guide you...or whatever. I deeply feel these are all expression of mind - the mind of the force user and the mind of the Alchemical ALL.
I shy away from the words Jedi and Sith more and more as I grow into a spiritual maturity. While I acknowledge it is our roots here, I would like to see us move ever so slowly into the future. But they continue to be useful models.
Star wars is a good example of a myth system. Some people need the concept of angels and demons to sort out their trip through the Force. Others might find it useful to meditate on the Sith and Jedi paths. Belief is a tool, a model that brings characters to the players in the MIND.
From a pure science fiction view of the Jedi path, afterlife seems to be of little concern until the breakthroughs of Master Qui Gon Jin. Somehow he successfully broke the veil. Until a phenomena becomes repeatable though - it remains speculation, theory and myth. Once you can train you conciousness to break the veil - one might be able to learn from the spirits. More likely they are still just learning merely from constructs of their own mind though.
My final thought is that I am highly suspicious of anyone who claims to KNOW what the afterlife has in store. I think listening to people like this is dangerous. They already "know" so rational thought and contimplation are no longer important. All thinking is used for is to support their position.
I myself don't have a clue.
The Buddha said of death:
Life is a journey. Death is a return to earth. The universe is like an inn. The passing years are like dust.
Regard this phantom world As a star at dawn, a bubble in a stream, A flash of lightning in a summer cloud, A flickering lamp - a phantom - and a dream.
Walk In Peace,