Re: 50TH Anniversary rumor
we could only have one Doctor return for a 50th Anniversary, I think I would pick the 8th.
And have them meet each shortly before the Doctor uses 'the moment' to end the time war. Or why/how the Doctor comes to posses it, and devel maybe a bit into his reasons for using it (yes I know why it is used, to prevent the Time Lords from ending time).
On the continent of wild endeavour in the mountains of solace and solitude there stood the citadel of the time lords, the oldest and most mighty race in the universe looking down on the galaxies below sworn never to interfere only to watch.