One of the biggest leaps of logic: So after Luke and Leia are born, the remaining Jedi need to hide them. Send Leia to a noted separatist leader? Okay, makes some sense - might not be the most anonymous way, but a decent idea. To keep Luke hidden from Vader, they send Luke to the home of Anakin's stepbrother. On the planet where Anakin grew up. And keep him named "Skywalker". THAT'S the way they decided to hide the kid???