While he hasn't been on my all time favorite character list for years until last chapter, I would still be kind of bummed that he didn't get a major role in the movie. Since up to this point, Sasuke has been one of the main characters in this manga and even show. He even fought along side the main character before turning on him for the final time and then making a full development circle by finally coming to terms with his life. Also, it he is quoted in the trailer as saying "If he isn't here, I will just have to protect it myself". When he said it, the village was under attack, so I assume he was talking about Naruto not being in the village and someone needing to protect it.
With all of that said, it would be a let down for both haters, neutrals, and fans alike if he wasn't in the movie as a supporting main character. Haters love to hate, neutrals probably enjoy someone other than Naruto and Sakura from original team 7, and fans...well are fans.