1. The Mysterious Afterlife
In November 2003, Big Finish released their fiftieth main range Doctor Who story Zagreus. Coinciding with the 40th anniversary, this ambitious story (think Alice in Wonderland meets Doctor Who) allowed a large number of past actors to play a range of new roles in a story set entirely inside the TARDIS (or was it?) As part of this the Eighth Doctor came close to regenerating and briefly spent some time in a Gallifreyan afterlife where he was able to meet a few recent incarnations of himself. What if when Time Lords regenerate their past lives persist in the Eye of Harmony or kept alive as memories in their TARDIS? I think this can be made to work and I give this a 90% chance of being used. Anyway, those are my thoughts, over to you. Do you want to see all the Doctors? How would you bring them back? Let me know!