This. It's science fiction... science fantasy... whatever label you want, there is a creative solution as to why the "Doctor" has aged even though he "regenerated." I thought it was brilliant hand waving in Time Crash. It doesn't matter that they've aged--of COURSE they've aged, they are REAL people. I want to see them performing together. I just don't get the overwhelming need for veracity in a show like this. It's about a guy who travels in a box through space and time. Some things you just accept. And why not accept a slightly older 6th Doctor? BUT--I do wonder if that's the direction they are going to go. Do you make a love letter to the fans of the series as a WHOLE, or make it more about the show as it is now?