Ring Gear - 7
Ring gear is something I generally don't give a whole lot of thought to. Most of the time, I couldn't care less if a guy wrestled in traditional tights or a tuxedo. Given that most wrestlers still wear some variation of tights, Reigns' gear helps him stand out so that's always a plus. Reigns' gear is mostly black and, let's face it, everyone wants to be a badass in black sometimes.
Entrance - 8
His entrance also helps him stand out and simplicity is sometimes the way to go. Most everyone else comes out on the stage with some flashing lights, pyro and/or playing up the crowd; Reigns just comes out through the crowd without a lot of pomp and it makes an impression.
Entrance Music - 8
While I think Reigns' entrance music works, it's not something that hugely connects with me because I identify it with The Shield as a whole rather than one guy. But, it's recognizable, generally simple and straightforward; so it works just fine.
Physical Appearance - 9
Arguably, Reigns' greatest asset is his look. I've said lots of times that if you took off the long hair and the goatee, he could pass for The Rock's younger brother. Reigns is about 6'2, about 250 pounds or so and he's got the whole stud thing going for him. The fact that he has such a strong physical resemblance to The Rock can only work in his favor, especially with Vince.
Character/Gimmick - 4
In my opinion, and that's all it is, I think people are being way too generous here. Reigns' doesn't really have much of a character or gimmick. He still uses the ring gear and music of The Shield yet in terms of personality, Reigns' persona was far less pronounced than that of Rollins and Ambrose. Reigns was the mostly silent muscle, though he spoke when he had something to say that was usually short and to the point. It worked just fine because that was his role but now that he's out on his own, there isn't really anything there as far as a character goes. Take away Reigns' getting over as part of The Shield, and he's a fairly one dimensional bruiser.
Mic Skills - 5
While Reigns has gotten better on the mic, he's not what I'd really call good. He's no longer quoting Looney Toon character catchphrases and he does seem a little more comfortable out there, but he still has a ways to go in my eyes and he still makes me cringe when he tries to be cutesy and funny during his promos. MAYBE it'd be easier for him and he could show a whole lot more confidence if he was saying what was on his mind rather than saying what Vince writes for him to say.
Finisher - 7
I think Reigns' finisher is a solid move that's easy to perform. At the same time, the downside is that it's such an easy move that ANYONE can perform it. I think one thing that holds the move back is that we've seen it so many times from so many different guys over the years either as a finisher or as a signature move that it just feels overused. I will say, however, that Reigns is someone who has the type of physical look and build that's more cohesive with this move than someone like Edge. Reigns has a more compact, thickly muscled build and it gives the impression/illusion that he can deliver more impact with the move during a wrestling match.
Signature Moves - 7.5
Reigns' set of signature moves isn't anything special, but they can be exciting and entertaining to watch. They're not overly complicated, but they involve power and it's ultimately what's going to be his bread & butter. Reigns is never gonna be a technical whiz, a high flyer or a submission specialist; he's a bruiser and his signature moves reflect that.
Move Set - 7
Again, nothing overly spectacular as far as his move set goes but, at the same time, still entertaining for the most part. You're not gonna see Reigns' flipping over the top rope or performing hurricanranas all over the place and that's okay, doesn't mean the man's lousy inside the ring. While everyone obviously can't be a 6'2" 250+ pound slab of Samoan muscle, not everyone can be a 5'10" 185 pound bundle of speed and agility either.
Move Set Depth - 7
See answer above.
Selling/Bumping Ability - 8.5
Reigns has strong, very solid selling capabilities and isn't afraid to take a bump. We saw during his match with Lesnar at WrestleMania XXXI that Reigns isn't afraid of taking some stiff shots, nor is he opposed to working a very stiff style. Neither he or Lesnar probably had to really sell that much, truth be told, as they were kickin' the snot out of one another. I didn't have a lot of faith in these two being able to pull off a strong match if they didn't turn it into a physical brawl, but they did it and it definitely surpassed expectations.
Whole Package - 7.5
Like Sam said, a wrestler is more than just the sum of his parts. These factors don't take into account whether or not the wrestler uses or understands psychology, knows how to tell a story inside the ring and is able to pull everything together to deliver an entertaining overall package. I don't think Reigns is the next big thing, I think he has work to do and that he definitely needs to improve in some areas; I also think WWE did the right think by not having him win the title as he needs more seasoning and to build up these weaknesses he has and that can only happen with time.