George didn't have time to wait 10 years for a 8 or 9 year old to grow up. At minimum Anakin was going to be a pre-teen 12 year old. And with MJ for Jar Jar. Maybe he met with a then 20 year old Angelina Jolie for Padme as well. Maybe he thought about Nick Nolte for Qui-Gon or a then mid 30's Kenneth Branagh for the original older Obi-Wan of The Beginning. In an alternate reality we have Walken and others as the OT trio. All I know is that JL and HC were AWESOME!! as Anakin as so that is all that matters. George was right again. As usual! He's very boring that way.