Sheamus has held the World Heavyweight Championship since WrestleMania, and while he unquestionably has a sizable fan following, I can't help but think that The Great White's character would be far more effective as a heel than as a face.
I realize that many fans are constantly calling for every face on the roster to turn heel, and that obviously isn't a realistic request, but Sheamus in particular is a guy who was meant to be heel. He's a big, tough, menacing Irishman who doesn't back down from a fight and he would be much better off as a primary rival of guys like John Cena, Randy Orton and even Ryback.
Sheamus already had a lengthy stint as a heel early in his career and it's true that he didn't entirely take off until turning face, but now that he has established himself, it is probably safe to go back to the persona that fit him much better. I really like Sheamus and feel like he can be one of the faces of the company moving forward, but his character is very unnatural.
Instead of constantly smiling and joking around, Sheamus should be an unstoppable machine. I could understand if Sheamus were some sort of marvel on the mic, but I consider him to be in average in that regard, so I really wish that he would let his fists do the talking rather than being a jovial guy who nobody actually takes seriously.
Sheamus wasn't handled particularly well during his first heel run either, as he won his first WWE Championship based on what was made to look like a fluke with John Cena slipping off the top rope and falling through a table. He also looked cowardly on several occasions and simply wasn't used to the fullest extent of his potential.
I realize that the monster heel shtick has been done to death, but there honestly isn't one currently on the WWE roster. Ryback could be that guy, but Vince McMahon and the WWE brass has to be happy with the reaction he has been getting. It looked like Tensai was going to be that guy, but he has fallen by the wayside and is little more than a jobber to the stars now.
The only thing that would give me pause when it comes to turning Sheamus is the lack of main-event faces, but you would still have Cena, Orton and Ryback, and a guy like The Miz could turn face and thrive at any moment. In fact, I believe a feud between Sheamus and The Miz culminating in a double turn would be a great way to execute it.
You simply don't see a specimen like Sheamus every day in the wrestling business and I feel like it is a shame that he is being used in such an ineffective manner. He definitely has a fanbase, but he has essentially been irrelevant since winning the World Heavyweight Championship. He just doesn't do anything that captivates fans in the same way as a John Cena or CM Punk.
He may be the world champion, but most of his pay-per-view matches have taken place in the middle of the card, essentially making the World Heavyweight Championship a mid-card title for all intents and purposes. Perhaps turning Sheamus heel wouldn't change that immediately, but it would make him much more interesting to the average fan.
I have to believe that part of the reason why Sheamus hasn't fully gotten over as a credible world champion stems from fans wondering why a big guy like him is acting like a clown instead of just taking care of business in the ring.
It took me a while to warm up to Sheamus as a main-event guy, but I eventually came to enjoy him as a heel. I initially liked him as a face as well, but he hasn't had a single good feud since WrestleMania and it just seems like he needs to make a change of some sort in order to freshen up his title reign.
That could mean simply having an edgier face character, but I would be in full support of a heel turn. Things are very stale on SmackDown right now and something big is needed in order to shake things up. Having the brand's top champion turn his back on the fans would be the perfect solution.