It would be far too dramatic a step-up to face someone like Arreola or Chisora. A big step-up would be someone like Dominic Guinn.
It would be interesting to see if he could stop a good defensive boxer like Scott. Scott has never really been stopped (I don't consider that shady referee waving off the Chisora-Scott fight legit). Thompson would provide the ideal test for Wilder. If he stopped The Tiger, then we'd know he's for real.
I've no idea how good or bad Wilder is. I don't think anybody truly knows. Only a step up gives answers. He looks to have the potential to beat Arreola or Chisora but badly needs to develop his defense. Chin issues look to be his downfall.
If Vitali fights one last time it will be Stiverne. Then, if he wins, Stiverne will drop in the rankings and Wilder will be left to fight Arreola for the WBC belt. Until then, rest assured, he'll continue to get supplied with easily beatable opponents.
Wilder would knock Kimbo out easily. I think Wilder is fully capable of beating better opponents than he's been fighting.
Charr, Chisora, Scott or Mago (if he beats Perez) would all be good fights. Any of those is a HUGE step up from where he is now which is not a good thing really.
BREAKING NEWS: Around midnight, Al Haymon and Jay Deas were seen with shovels walking through graveyards searching for Deontay Wilder's next opponent.