Senior Designer William Wallace details the upcoming Legacy System changes in Game Update 1.2:
Where would you start if you were constructing the Skywalker family tree? Lets start with Anakin. If you ask me, Anakin is a level 50 Sith Warrior anchoring the top of the family tree. Hes married to Padme Amidala and they have two kids, Luke and Leia. Luke and Leia were both strong in the Force, like their father before them. Leia ends up marrying Han Solo, undoubtedly a level 50 Smuggler, and they have three children who all turn out to be Jedi. Luke marries Mara Jade, and they in turn have Ben, who is also a powerful Jedi Knight. Looking at their family tree, its clear that the Skywalker legacy produces powerful Force users and great heroes.