So far, no one has written the
Skyfall inspired long M story of my dreams, and I'll try not to pout about the avalanche of Bond/Q there is instead. (At least as opposed to the last avalanche, Clint/Coulson, they had actual on screen interaction.) (Also, it's always great to reread the Casino Royale and Quantum of Solace era M stories.) However, since
Skyfall opened in the US later than elsewhere, the actors are still busy promoting, which means there is no lack of new "Daniel Craig declaring his love for Dame Judi" material. In
this interview, he comes up with gems like "She walks into a room, she lights it up" and "I'd sweep the floor for her". Bless. Also, clearly someone was enjoying themselves during shooting this film:

And here are some
Skyfall related stories I did enjoy reading:
Perpetual Anticipation: a short and intense look at M and her relationship with Bond.
Seek a newer world: Silva, Q, Bond and M before and during the film. Uses the "Silva is who Bond could have become" interpretation the film suggests creatively.
Down the burning ropes: the treatment of Sévérine by the film came in for much justified criticism. Luckily, fanfiction thrives on going for plot holes and fail and making something creative out of them, and I don't mean fix its. Here's Sévérine in her own point of view. Burns, as it should.
With your hand in my hand we'll still stand: The crisis is over but no one at MI6 is sleeping yet. Film aftermath centered on Q and Billl Tanner, which is also Q/Bill Tanner. See, I've got nothing against Q slash. Just not with Bond. (Incidentally, the TNG fan in me finds it incredibly weird to type "Q" , add a / and then not to follow it up with "Picard".)
It felt like a betrayal: creepy and hence appropriate Silva drabble.
You may have my number, you can take my name: MI6 tries to recover from the film's events. This one is great with the Q and Eve friendship, and offers a bonus
Avengers or rather
Captain America crossover near the end. (I have to handwave some logistics for the premise of same here, but hey.)