#1.) Brock Lesnar
This isn’t a feud that should be for the United States Championship. Instead, Mysterio’s United States Championship win should be what prompts him to go after Brock Lesnar again. We know that Lesnar won’t be appearing again until early next year for the build to the Royal Rumble, so there’s time until then.
It would be a feud that can be run back and fans won’t complain about it. It would be interesting to see the match happen from a different angle and we’re sure they could exceed their last bout in terms of quality.