Perhaps the producers realized that Mr Logan isn't all he's cracked up to be either. I haven't really cared for any John Logan script in any movie I've seen.
I don't care if he's written for Scorsese. I don't care if he's written for Ridley Scott.
I first noticed John Logan's name on the '02 Time Machine remake, and then again on Star Trek: Nemesis, and when the audience notices the screenwriter's name, there's usually only ONE reason. And it's not because Oscar nominations.
(And I was only passable on Skyfall also, which I thought would have worked better as a series finale, if not that they finally improved M, Q and Moneypenny--
Leaving aside the whole "sewer" thing, Javier Bardem beat the wispy-lispy villain trope so far into the ground, he bore a distracting resemblance to Al Franken's SNL Stuart Smalley as a Bond villain:
"You left me behind on that mission, M, but you know what?...That's okay. Because I realized, 'I like myself, darnit!'")