Star Wars: The return of StarKiller

What if Galen Marek didn't die at the hands of the emperor but survived in a comatose state and used as a living template in Kamino? What would happen if he woke from his slumber and escaped the facility? Would he finally end the empire or would he give in to it's allure and re-join his old master or would he rise to create a new power too keep both factions in check? This is the story of what might have happened if Galen survived the events on the first Death Star... Chapters will be released whenever I have spare time.