I'm trying to look at the positives coming out of Rumble as opposed to the predictable outcome. Anybody who actually believed somebody besides Batista was going to win was setting themselves up to get pissed off. They heavily promoted Batista for weeks leading up to it.
The positives:
1. Roman Reigns once again had a stand-out performance, and broke one of the most solid records in the WWE. The fans were also strongly behind him by the end of it, and it's clear that his future ahead is bright. He's likely going to be the next huge star on WWE's payroll.
2. Bryan lost cleanly to Bray in one of the best matches I've seen in a long time, and still came out just as over as he was going in. The fact that he wasn't in the Rumble only adds to his "being held down" storyline that he's been pushing.
3. Cena didn't win the belt again, and now feuds with Wyatt which is fresh(something Cena has badly needed for a while now). Wyatt is going to be strong and believable heading into the feud, and could steal the show with Cena at Mania.
4. Despite Batista winning the Rumble, it was still a very good finish. All of the people at my house were actually buying into the idea that Reigns could pull it out, which is exactly what the Rumble is designed for; the suspense.
Bottom line is the Rumble was always designed to beat the drum for the march to Wrestlemania, and it did a damn good job of setting up the showcase matches, and leaving a lot of suspense heading into the Chamber.
My biggest complaint about the entire show was how dreadful the Cena/Orton match was. That was by far the worst match I've seen the two have. It seemed like they were just putting in minimal work, punching the time clock, and going home. Absolutely nothing special about the match at all, aside from setting up the Wyatt vs. Cena feud.