Keaton is already a strong contender for the Oscars. On the other hand, I don't see a lot of strong names in the comedy or musical category at the Golden Globes. I think Michael has chances...who knows?

Next year that it will be hard because he'll have three big films: Macbeth, TLBO and TAU. But I have the impression that the second one will be released in festivals and only hit theaters in 2016. Tresspass looks like a British award contender. Macbeth is the ONE. That's an Oscar performance for SURE.
There's Bill Murray for St. Vincent ,probably Boseman,and there are also various titles from the TIFF (Baumbach's While we are young,Reitman's Men,women and children) that have the advantage of being discussed during the awards season.
Into the Woods is another film which could do well with HFPA. They are always those who nominated Depp for The Tourist..
However it's good to see so many raves for a risky performance. This is a passage from Amy Nicholson's review (she writes for The Village Voice):
"Look closely at Frank's mask and you'll spot two plaster bandages by his nose, a hint at a life that's taken some lumps. Study Fassbender's limbs and see one of the best physical performances of the decade. His face never changes, but he has visible soul. In small movements the twitch of a hand, a wobble under a door frame, a beer and straw held uselessly by his painted mouth Fassbender gives us glimpses of what Frank's isolating genius has cost him."
http://www.laweekly.com/2014-08-21/...plays-a-musician-who-wears-a-giant-fake-head/
Even if it will not be recognised at all,Frank has received an enthusiastic response not only from critics but also from many people who have seen it . It's not a "conventional" film so it's a very good result.
Speaking of awards,I've found this conversation with the Boston Globe film critic Ty Burr,he was discussing the last awards season. It's interesting what he says about Michael's approach to his characters,and obviously he speaks highly of him

:
"CHAKRABARTI: On the radio, exactly. Well, so let's talk a bit for a second about Best Supporting Actor, because you were talking about the year of the McConaissance regarding Matthew McConaughey. But in "Dallas Buyers Club," Jared Leto has also been considered a favorite for his role as the transvestite AIDS patient Rayon. But you've got another favorite in this category as well, Ty.
BURR:
Well, Michael Fassbender is this insanely talented actor who plays characters that are not nice people, and he plays them without a shred of vanity. Often when you have actors playing villainous characters, there's something going on to let you know that they're not really like that. He doesn't go there. Here as the plantation owner in "12 Years a Slave," he is nominated, but the performance is just so deeply evil that I don't think he's going to - I think he scares people.
I think his character has put off voters because nothing - he's not interested in redemption. I think he's that honest an actor. I hope someday he wins an Oscar or awards just to have it on his shelf. Actually, in the long run, you know, like a lot of actors he probably doesn't care that much, although the attention is great.
But I just hope he's not one of these people that gets to the end of his life and they give him an honorary award, and that's it."
http://hereandnow.wbur.org/2014/02/26/academy-award-nominees
It's true,I've never noticed vanity in his approach to his characters,and regarding the Oscars,I don't know.. I've always got the impression that winning doesn't bring so much luck

.. He's not the type of person who could take the Hathaway's-Portman's route (look at me! look at how I'm good in it!

)but generally people became tired,because in order to win actors\actresses end up being overexposed (dozens of covers,interviews and tv appearances). I prefer he continues to choose interesting and challenging roles without caring too much for awards.