I don't know if I agree with everything you said. Admittedly, I was also surprised Brooks missed out but the fact is Warrior was a great film and he was very good in it. Whilst I did really enjoy Moneyball (one of my favourites of the year and I've never watched a baseball match, well played Hollywood...) and I thought Hill was very good in it I can't help but feel his role was essentially that of the straight man to Pitt. Solid, but not Oscar-worthy.
As for the other ones, I thought Oldman was superb in Tinker, Tailor. I haven't seen Shame but I've heard Fassbender is incredible and I really like him as an actor so no doubt there will be comments on that.
I wouldn't necessarily agree that Melissa McCarthy deserves to win Best Supporting Actress. I'll agree it's great the Academy is noticing comedy but the fact is it seems like you are only choosing her to make a point that she won't win or that the Academy should make wildcard decisions. However, I can hardly get into a debate here as I haven't seen the other films the actresses are nominated for and so maybe it was just a relatively underwhelming year.
Very disappointed about Andy Serkis, I love watching behind-the-scenes features on his work. The level of preparation is amazing and the ability to bring such emotion to a 3D model is nothing short of spectacular. You only need to look at the likes of Beowulf or Mars Needs Moms to see that it isn't easy. The lack of Rise nominations is surprising, although bear in mind that the 3 categories Transformers was nominated in it did do well- the sound was very impressive, as was the CGI (which Rise was rightly nominated in as well)