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Definitely...about Capaldi's Doctor.
9 months, 2 weeks ago on Doctor Who Series 8 (2014): What We Know UPDATE
@SamiRahim Everyone is going to have a different opinion. For example, I think Matt Smith was just okay but Dave Tennant was fabulous.
For one, it's a continuity thing, and it would be interesting to see what the writers might come up with. Two, such a thing has been mentioned and addressed in the Torchwood/Doctor Who worlds before with Gwyneth and Gwen. They came up with "spatial genetic multiplicity" to explain why Gwyneth and Gwen were identical. What could they come up with about Frobisher and the new Doctor? Then there was Clara and Oswain. Same actress different roles - it turned out to be an important plot point. So while other shows might have conveniently ignored the same actors playing different roles within the same show, there is a history (albeit a small one) of explaining recurring faces.
1 year ago on Doctor Who Series 8 (2014): What We Know UPDATE
I want to know if they ever bring Captain Jack Harkness back how is John Frobisher going to be explained. Capaldi played Frobisher (and did some very naughty things to Torchwood) as well as Pompeii dude.