I had about a 6 month long feud in my Universe mode between World Heavyweight Champion Sheamus and WWE Champion Randy Orton. The feud started with Sheamus attacking Orton with the WHC after Orton won his match. After that, I put the two in a match the following week, and the storyline progressed. The feud ended at Wrestlemania in a title unification match, which Orton won, and he became the WWE Undisputed Champion.
After playing through that feud, I feel completed with the game, as WWE 13 is about to come out later this month.