#2 A feelgood moment for the fans
Roman Reigns' announcement at the opening of RAW was the most emotional moment in WWE since Reigns announce he was leaving in October. There were grown men in the audience who were tearing up as Roman thanked everyone for their support and announced he was in remission again.
Roman and Seth coming out to help Dean Ambrose could have just been WWE's way of giving fans a feelgood moment during the show.
#1 Something for Rollins to do until Mania
Seth Rollins will face Brock Lesnar at WrestleMania but since the Universal Champion doesn't usually show up on RAW, this storyline could be a way for WWE to give Rollins something to do until the final buildup to WrestleMania.
This storyline can keep Rollins busy till Fastlane before WWE makes Lesnar return in the final weeks ahead of Mania.