A true Celtic Warrior, instead of a generic face/heel with celtic crosses in his attire. When he was Sheamus O'Shaunessy, he had his own blog where he wrote about his character as some ancient hero who is cursed by an Celtic god, fall sleep and awakes in our era or something like that. He carried weapons(axes, swords) in his entrances, a cape, used warpaint... I can understand the mythic aspect of the character is too much for WWE(well, he's as over the top as Undertaker or Kane, if not more) but in WWE he could be just the barbaric guy inspired by Celtic mythology and culture, who inherites the will of the ancient warriors or something.I'd love to know, for sure, just exactly what kind of gimmick/character Sheamus would roll with given 100% freedom to make his own choices. I really would.
But you know, it's WWE. If you have not an over the top gimmicks that trascends being heel or face (again; Kane, Undertaker or even Goldust) you only have two options: smiling babyface and bully-if you are big- or swormy-if you are not- heel.
You can check out Sheamus O'Shaunessy blog below.
That said, I'm a fan of Sheamus too. I don't see how people say he has no charisma and then they love Neville or Cesaro. Sheamus has an unique look, a great moveset and I think the guy is charismatic whe given the opportunity.