I don’t even think George knew was a Whill was. He was going to tell us in his sequels. Now those are never going to happen, those Midichlorian Star Wars sequels he wanted to do.

There was this whole deleted sequence in the prequels where the Whills helped the Jedi preserve themselves in the force. From what i read Liam turned down episode III and that was never shot. Something to do with Yoda and Obi Wan learning how to not only preserve their identity in the force like Qui Gon as a disembodied voice, but to physically manifest themselves.