Very excited to see Peter Capaldi's take on the Doctor. Loved Matt Smith just fine, but I'm hopeful we'll see a Doctor who is a bit more weary as he ages, a la John Hurt's brief performance. Seeing an aging character who approaches situations differently than his predecessors would be extremely interesting.
Wouldn't hurt if Steven Moffat also hearkened back to episodes like "Blink" or "Silence in the Library." Toning things down a bit, without constantly injecting some huge, overarching storyline into the show would be a welcome return to form. In my opinion, those were some of Moffat's best episodes because they were so isolated. He focused on the in the moment tension, rather than what it meant for the overall story. (Surely you could argue that River Song's first appearance contradicts that previous statement, but I think her existence in this episode is more of a tease to who the Doctor is and what he's experienced, rather than pertaining to an overall plot for the series.)
The Weeping Angels in particular were a brilliant one-off villain that were pretty terrifying, but their impact was significantly diminished once we started seeing them appear over and over again. This is something that also started to happen with The Silence, and is a source of great frustration for me. A brilliant idea being bludgeoned to death. Quality, not quantity, Mr. Moffat.