#12 Seth Rollins vs. Dean Ambrose
No rest for the weary.
While the details of Dean Ambrose's return are still murky, Rollins says it will happen in "late spring."
Regardless, The Architect vs. a heel Lunatic Fringe has a ton of fuel in the tank, given their long history.
If ever there were an ideal candidate to unseat the Architect as Intercontinental Champion, it would be a heel, Ambrose.
Of course, we still don't know if the turn will even happen (I suspect the company may want to keep all of the Shield members on good terms in case they need to break the glass in case of a Roman Reigns emergency), but the Lunatic Fringe will come off the injury shelf later this year.
Whether it will be before or after SummerSlam, this is a feud to look out for.