#4 Great rivalries await
Imagine Drew McIntyre and the Authors of Pain against The Shield at Extreme Rules with all titles on the line. How about The Shield vs. SAnity? Perhaps even The Shield vs. the Undisputed Era? And those are just the possible NXT call-ups in the next year. The Shield vs. The New Day looms large on the main roster as a dream match waiting to happen right now.
All of these are salivating possibilities that would make 2018 a far more exciting year than any series of Reigns, Ambrose, or Rollins individual feuds could. The Shield as a unit, holding the gold and challenging all comers, would go a long way to making it "Raw is War" instead of the usual chore it is to sit through Raw from 8 to 11 every week.
Who would dethrone The Shield and take what's theirs? We'd get to witness a whole bunch of wars to find out and it would be glorious.