Wrestlepalooza kicked off a whole new era in WWE, and although it was a solid show, it seemed that some of the content didn't meet fans' expectations in the weeks leading up to the event.WWE knew it had to push the boundaries to make this one of the biggest shows of the year, but some of the decisions made throughout the show could have been different.The following list looks at just four of the biggest mistakes that were made at WWE Wrestlepalooza.#4. Cody Rhodes shouldn't have retained the Undisputed WWE ChampionshipESPN @ESPNLINKCODY RHODES BEATS DREW MCINTYRE TO RETAIN HIS UNDISPUTED @WWE CHAMPIONSHIP TITLE 🏆 #WrestlepaloozaCody Rhodes defended his Undisputed WWE Championship against Drew McIntyre in the main event of Wrestlepalooza, and some believed that this match was chosen to be the main event because there could be a title change.The new era could have been pushed forward by a new face, and Rhodes might have finally gotten some much-needed time off to be with his newborn daughter. Instead, the match ended up somewhat disappointing, and fans now have to wait and see if McIntyre gets a rematch at Crown Jewel.#3. AJ Lee and CM Punk vs. Becky Lynch and Seth Rollins should have been for the titlesAJ Lee and CM Punk defeated Becky Lynch and Seth Rollins in their mixed tag team match, but many fans have argued that this match should have had much higher stakes.After Lee was forced to return to help her partner overcome one of WWE's hottest couples, it should have been for both the World Heavyweight and Women's Intercontinental Championships, or at least had the added implication that if Punk and Lee won, they would become No. 1 contenders.#2. The Vision's win over The Usos felt rushedThe Usos vs. The Vision was an interesting back-and-forth, but the ending felt rushed after Jey Uso injured himself on a steel chair. The Usos were on top for a large portion of the contest, but then Jimmy was speared through a table, and the match ended with a Tsunami.It seems that an audible may have been caused by how much Jey was bleeding, but it was a shock that The Vision was the one who came out on top.#1. AJ Lee's in-ring return should have been the main eventThere were a number of matches that could have main-evented Wrestlepalooza, and it was surprising that Cody Rhodes was given the nod. His matchup was only set up a week ago, and Brock Lesnar vs. John Cena was built as a much bigger draw.AJ Lee's return was also a massive deal for several weeks, so it came as a shock that the women weren’t allowed to main event the show. The finish to the Lesnar match would have had more impact at the end of the show, while Lee's return could have allowed her to come full circle, but instead, Cody Rhodes vs. Drew McIntyre was chosen.