I am just saying but evey great character has an end. Revan is just the same as everyone else except for the fact that he is extremly strong in the Force making him speical. That being said I do not douht that Revan is not alive in fact I think that he may have used a technique that transported him somewhere or another who knows.
But, every great character has an ending evwn though that ending may not be the best.
Cool story by the way.
I have my own story that I may or may not work on depending on time.