Decided to watch it simply because YouTube threw the Adelle’s “Skyfall” song at me.

Main themes: getting old. A steamship dragging an old Napoleonic-times warship. “Old dog, new tricks”.
There are a few jibes at the series origins: “What were you expecting, an exploding pen?” coming from the New Q is rich.
But do they really tried to step away from the roots? The villain is certainly a cartoonish one.
The scenes in London were fun to watch. The other scenes – not so much.
The one good character is the Vice PM, because he actually shows some development. At first everyone expects him to be a bureaucrat that is “unused to field work”. Then we’re told that he was a colonel held by IRA for 5 months. Then there’s the shooting scene, where he actually proves himself. It’s all a buildup for Judi Dench getting tired of playing M.