#3 To elevate the Intercontinental Championship
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The Intercontinental Championship was elevated greatly when The Miz was Champion. Since Rollins won the title, his reign has borne mixed results.
On one hand, he had a fantastic program with Dolph Ziggler all summer long, but on the other, the title has been sidelined ever since The Shield was reunited. This is because The Shield vs. The Dogs of War storyline took precedence.
By having Dean Ambrose and Seth Rollins feud for this prestigious prize, all eyes will be on the belt once again. These two men can ensure that the title remains prestigious and like I've mentioned before, that the void formed by the departure of Roman Reigns is not felt.
When you work in a team, you generally also work great against each other. If you don't believe me, just ask Ciampa and Gargano.