For my money, whoever is playing the Doctor should be in the movie. I don't think there should be two Doctors. I think it would take four or five years to get something like that off the ground, and I don't anticipate that I'll be playing the Doctor then. My skin and the aging process couldn’t take it. But, I don't see any reason why it couldn't work. I think they should get Steven to write it because he’s the best.
Meanwhile, Steven Moffat re-iterated that any film version of Doctor Who will not be a separate entity to the current television series. Speaking to Airlock Alpha at the same event, the show's lead writer commented:
There will not come a time when there's a separate kind of Doctor Who. What was talked about there was that there would be a separate Doctor and a different continuity. Of course it won't. That would be silly. Everyone knows that's silly. The BBC knows that's silly, and is not going to do that.
The likelihood of an alternative film version of the show was promoted by director David Yates back in November when he told Variety that BBC Worldwide Productions were undertaking the project and writers were being considered for a version that "would start from scratch".