In regards to Seth Rollins going down with an injury this month, it may have seemed like WWE officials were in panic mode or running around “like a chicken with its head cut off” but that is not the case, according to PWInsider.
WWE officials knew where they wanted to go with the WWE World Heavyweight Title, with Roman Reigns as champion going into WrestleMania 32 season, and that is still the direction they are going. There was no real panic among WWE higher-ups as they were already close to getting the title on Reigns.
Reigns was scheduled to win the title at Survivor Series and then the rematch would have taken place in a standard TLC match as the main event of the December TLC pay-per-view, where Reigns would have retained.
In regards to reports that the Rollins injury likely changed major WrestleMania 32 plans, word is that there has not been a real shake-up in plans. WWE officials have 3 or 4 main event matches set in stone and Rollins being out won’t change those plans. This indicates that they were not planning on having Rollins in a real main event position at WrestleMania 32.