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!