#2 Reigns vs Rollins

Roman Reigns and Seth Rollins have had many epic battles in the last few years, although it doesn't really feel like they've had an extended feud that has effectively enticed the WWE Universe.
Because of that, having them square off for the Intercontinental Championship would probably feel fresher than some fans would've initially thought.
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Reigns would clearly be positioned as the bad guy as Rollins continues his rise to becoming the best babyface in all of professional wrestling, but that doesn't really matter in this instance.
The series of matches these two are capable of having would be remarkable to watch, and sometimes, that's all you need.