I'm gonna go ahead & share my Susan idea here since she's been brought up. Bear with me.
I've always thought that the Last Doctor story should end with a trip back to the beginning to start his life as we know it. When he first came to Earth in '63, he had no feelings about the place one way or the other. He stayed because of Susan's love of the place. One thing we know she loved was music, especially 'John Smith & the Commonmen'. I've always thought that it'd be neat, in a farewell tour like Ten sort of way, to have the Last Doctor go back to record the song we heard Susan listening to in An Unearthly Child. That would set off the events that lead to Ian & Barbara to the TARDIS, & ensure the Doctor's future.
Let the hatred begin:confused.
I've always thought that the Last Doctor story should end with a trip back to the beginning to start his life as we know it. When he first came to Earth in '63, he had no feelings about the place one way or the other. He stayed because of Susan's love of the place. One thing we know she loved was music, especially 'John Smith & the Commonmen'. I've always thought that it'd be neat, in a farewell tour like Ten sort of way, to have the Last Doctor go back to record the song we heard Susan listening to in An Unearthly Child. That would set off the events that lead to Ian & Barbara to the TARDIS, & ensure the Doctor's future.
Let the hatred begin:confused.