Originally Posted by
Kim
Another possibility who has previously appeared. He was in it quite recently too, so I'm not sure whether it would work very well. I wasn't sure about the Tom Ellis suggestion but at least he was in the series before Colin Salmon was.
If they want to have someone from the past then I think it would be best if they weren't in it so recently, so people are more likely not to recognise them if they don't read the articles when the new Doctor is being decided. I read somewhere that they were also considering the man who played Roderick in Series 1 for the first black Doctor. That might work better too if some people haven't seen that series.