I´ve been doing an edit exactly like this for the last 6 months or so. A prequel edit inspired by Topher Grace that´s meant to be viewed only in the Machete order. It´s almost done and I´m not using any of TPM.
I want my edit to be in line with the OT, one of the things being that Obi Wan was trained by Yoda and that Obi Wan took it upon himself to train Anakin. TPM pretty much negates these facts so that´s why I ain´t using anything from it.