One more note to ponder.
Sherlockology on Twitter linked an article that points out something interesting that was not discussed in the previous post regarding the possibility for Ian McKellen and Benedict Cumberbatch to work together (in some capacity)?
From HitFix (emphasis mine): [...] In the book, there is talk of how the White Council had to drive The Necromancer out of Dol Guldur, deep in the heart of Mirkwood. It's relayed as a story that Gandalf tells. But that character is actually one of the incarnations of Sauron, and his stop in Mirkwood is just one part of his character's dark and awful history. If they're going to show the White Council and Gandalf actually go head to head with him in one of the two films, that's exciting and fairly significant. It means we're going to see Sauron in human form, something that never happened in "Lord Of The Rings."
So while this is still early (we haven't have much clue on how the two film is going to work storyline-order-wise), it'd be something cool to keep in mind if that scene is taken into the script.
From HitFix (emphasis mine): [...] In the book, there is talk of how the White Council had to drive The Necromancer out of Dol Guldur, deep in the heart of Mirkwood. It's relayed as a story that Gandalf tells. But that character is actually one of the incarnations of Sauron, and his stop in Mirkwood is just one part of his character's dark and awful history. If they're going to show the White Council and Gandalf actually go head to head with him in one of the two films, that's exciting and fairly significant. It means we're going to see Sauron in human form, something that never happened in "Lord Of The Rings."
So while this is still early (we haven't have much clue on how the two film is going to work storyline-order-wise), it'd be something cool to keep in mind if that scene is taken into the script.