#3 Brock Lesnar
With Brock Lesnar's WWE future still up in the air, such an unfortunate situation could force the company to present another lucrative contract to the Beast Incarnate to take the benefit of his services.
While the former Universal Champion is scheduled to appear at WWE Crown Jewel, his UFC commitments will certainly hinder Vince McMahon's future plans during the Road to WrestleMania 35.
If Brock Lesnar indeed signs another contract with the WWE, then the company could certainly do some good business going forward in 2019.
Having been the most popular box-office attractions in the entire wrestling industry, Brock Lesnar's aura could prove beneficial for Monday Night Raw, with feuds like Drew Mcintyre, Dean Ambrose, Bobby Lashley, and Finn Balor expected to happen.
If there's a momentous time for WWE to push the envelope with Brock Lesnar, it is now and it could prove to be very beneficial for the company from a business stand-point.