Originally posted by: Dug
And just another thought. The new Jedi doesn't have to be on Yavin, either. The universe is so huge, there are so many other new and interesting locales it could go to. Luke could even have an all-new one completely built.

My thinking is influenced by my plan to press on to a new trilogy. The Empire wouldn't fall until episode IX and therefore Luke wouldn't have the freedom or the resources to construct any new temples. I think he might look for somewhere out of the way of the Empire's direct attention, with structures already there to be used. I'm thinking that, 20 years after ROTJ (there's a (fairly arbitrary!) 20 year gap between my three trilogies), the Empire may have all but forgotten the destroyed rebel base on the 4th moon of Yavin, leaving it available for another covert purpose. Luke would remember it from his first adventure and it certainly seems to be a place teeming with life.

I imagine Luke, after ROTJ, scouring the galaxy for Jedi that survived the purge, following up leads and convincing them to join him in creating a new Jedi Order to take on the Sith and their Empire. I imagine him bringing them together in a place beneath the Empire's attentions and quietly, patiently, rekindling the fires of the light side. A further six years, over episodes VII and VIII, and they're ready to face the Sith. I imagine him standing before the Emperor again, not the green young man he was in ROTJ, but a centred, peaceful Jedi Master with the full power of the Force as his ally.