@Chris402 i mean, you can’t really get anything more than Tennant as 14… except for maybe him wearing his old costume rather than his new one.
If the doctor were to literally regenerate into an old incarnation wouldn’t that mean they would lose all their memories of incarnations past that point? Really to work properly Tennant is the closest you can get to that. Unless there was some “timely wimey” stuff where they switch timelines or something like that but even that wouldn’t be regenerating into a past incarnation. All the doctors are the same person and same incarnation technically. Just different face.
