The Mirrorball Man wrote:
Capaldi can play anything, there is no way to know what kind of Doctor he's going to be. That being said, my bet is on an abrasive curmudgeon type, a Gregory House Doctor.
I really can't see Moffat wanting to write the Doctor that way. I'm sure he'll dial down the zaniness and fairytale vibe to SOME degree, but Moffat still clearly enjoys writing his fun, fast-paced, time-twisty stories-- and you kind of need a Doctor who can work well within that style.
My guess is this will basically be another Christopher Eccleston Doctor-- someone a bit more serious, but who still has no trouble running around or breaking into a huge, geeky smile at a moment's notice.