I hear you and it makes sense what you're saying. Yet, did we need to know all of Obi-wan's or Yoda's backstory for those characters to work in the story in ANH or ESB? All we get from Old Ben is, "I was once a Jedi Knight, same as your father." It could and would work just as well, Ben Skywalker or Jacen and Jaina Solo, or all three of them, (or whoever) are searching for help, they find rumors of their grandfather having a padawan named Ahsoka Tano that "vanished into thin air" in a holocron that Luke recovered years ago from Old Ben's hut, or even Yoda's. They eventually find her and her line is: "I was once a padawan, just as you are yourselves, but that was a long time ago." It's no more shoe-horned than Obi-wan telling Luke in vision that he must go to "the Dagobah system, there you will find Yoda, the Jedi Master that trained me." I mean, where in the Dagobah system? Does Ben tell Luke? No. Does Luke just happen to crash land mere meters away from where Yoda lives? Yes. Do we sit there and question the probability of this the first time we watch ESB? Maybe, maybe some are that cynical, I do know people that can not enjoy a movie or a song because they are so busy with analysis they can not suspend their disbelief, or enjoy the whole without naming off all the ingredients that make it up. For the most part, no one sat there during ESB for the first viewing, questioning the improbability of Luke actually finding Yoda. We do get a sense in Star Wars, that there are encounters between characters that are destined. This is mentioned as an aspect of the Force many times. Do we need to know what Yoda did for 800+ years to enjoy his role in ESB or ROTJ? Do we need to know how he became such an amazing Jedi Grand Master and how he sat at the head of the Jedi Council to enjoy his role in the PT? No. Would it be nice to see his back-story? I think so, while others claim Yoda must be shrouded in mystery, so it's another contentious issue, really. My point is that, if the writers and Lucas so choose, all of these examples about Obi-wan and Yoda and how they were initially introduced, apply equally to Ahsoka, Maul, Ventress, Offee, etc. Would I like to see something like this happen, an old Ahsoka, helping out the young protagonists, yes. Do I think it would take tons of time out of the movie, no. Would it help if there were novelizations explaining the time between, absolutely. Yet, whether she has a back-ground cameo appearance or a deeper supporting role, people will still want to know where she's been, how she survived, how Luke and Leia came across her, etc. Why an old Ahsoka Tano? Many kids are partially raised by their grandparents, all over the world. Most people have a soft spot for their grandparents. I think this is part of Obi-wan and Yoda's appeal, it's part of the Jungian archtype that Joseph Campbell identified in mythologies from various cultures, the same Joseph Campbell that George Lucas was heavily influenced by. In our culture, which is more patriarchal the old men are considered wisest by many. It would be good for the young females to finally have an old matriarch to look up to. Besides, around the world, this is not so foreign at all, an old female matriarch being the wise and strong one that holds the family together. Who better to fulfill such a role, if the writing team were to decide they needed such a character? There is no other character that qualifies on so many levels; former soldier in the Clone Wars, experience with fighting Sith, padawan to arguably the best Jedi General of the era, someone who knows that rules are not always what's most important, and a link to their (assuming Ben, Jacen or Jaina are the protagonists) family, to their grandfather. No one else qualifies. Especially if they could only get Hamill to agree to one more movie, or that was the plan all along. I'm arguing, that if the ST is to hold to certain Campbell/Jung mythic stylings, there MUST be someone who embodies the "Wise Old Sage" archetype. If Luke Skywalker will be in the majority of the ST, Ahsoka Tano would not be necessary in such a role, if Luke will not be in the whole trilogy, I am arguing that no other character besides Ahsoka could fill that role.