Sure, the Academy does look favorably upon some genres and settings more than others, but your accusations are poorly founded against The King's Speech. Need I remind you that simply because a film has things the Academy likes does not mean that it's trying its best to walk away with the Oscar for Best Picture. Now where to begin...
Your complaint is that a character overcoming something is total Oscar bait... really?
That's the role of the protagonist. The protagonist has a struggle that they must overcome. Let's stick with Scott Pilgrim, a favorite of yours. On one level, he must physically overcome 7 evil exes, but on a psychological level he must learn to respect himself and find someone he's truly happy with (which were nicely displayed in tandem when Scott receives the power of self respect in the form of a sword in the film's climax). So yeah, that sounds like someone overcoming something to me. Any film that's aware of the Dramatic Structure will be, at its core, about someone overcoming (or failing to overcome)something!
As for your comment on WWII being too prevalent in Oscar winning films, I ask you to consider that historical films in general are popular. Gladiator, Braveheart, All Quiet on the Western Front, and Chicago all won Best Picture and come from a staggering array of time periods. This wasn't some sinister attempt to use WWII's setting to nab an Oscar simply because WWII is popular; the King's Speech is just a nice human drama in WWII.
Using your formula, we could come up with a wonderful film but shares too many similarities to other winners which means that it must be part of a conspiracy to nab an Oscar. Sure, there are things that the Academy does find favorable and will tend to vote towards these movies, but that doesn't mean that directors have found a way to "break the system," and create guaranteed Best Picture winners. If they did, studios would make cookie-cutter Oscar winners by the dozen.
And one last thing: The Social Network won't win because old people are scared of that newfangled Facebook machine? Really? The Social Network was hardly even about Facebook, but about its creators and the unique lives they lead. One need only know that Facebook is a global phenomenon to appreciate The Social Network.