Bryan: He seems like an absolute lock based on work alone and his record in the WON awards. If 17 Most Outstandings don't matter here then its tough to see how you can make a case for anyone based on a single factor. I know it can be done, and certainly believe that that a beyond significant drawing record should be enough based upon the impact that a huge draw can have on the very viability of a company and by extension the entire industry. Which in a very roundabout way gets us to Bryan's record as a draw. Based solely on a rough recollection he did better than average on top in ROH as champion/headliner. In his case perhaps that helps some voters who value that aspect of a candidacy. Personally I've yet to hear the case for anyone deserving consideration, much less induction, into the HOF based upon drawing on the indys. Until someone is responsible for an indy growing beyond that base I'm just not interested. It may not be fair, but earn a promotion to the major leagues and leave your mark there.
However, I think Bryan offers enough on that stage for those grasping for something beyond ring work. He headlined Wrestlemania 30 and his role there very likely saved the show from the perspective of how it came off to a worldwide audience, and may have been responsible for it drawing the buyrate it did (arguable that it did over 600k buys because of network concerns, but I think its tough to conclusively say this was or wasn't attributable to Bryan). But we're talking about the draw and focus of a Mania, which I look at like a Finals or Super Bowl MVP. When you factor in repeat winners there have been far less than 31. Being on that list shouldn't put you in the HOF, but it should be enough to earn you consideration.
Then again, if you don't think Bryan was one of the 5-10 best workers of the last 10-15 years than this moot and nothing else he did should put him over the hump.
Orton: More than Batista, perhaps a base case for what the WON HOF ceiling is for a non-Cena WWE #2. The best thing I can say about him is that in almost any other era, a sustained run as arguably one of the few biggest performers in the top company in the country should be a strong enough case for inclusion. It doesn't here, even if that doesn't feel fair.
Nakamura: Will unquestionably see a huge bump based on NJPW coverage the last few years. Wrestle Kingdom isn't Mania, and he hasn't been top 5 in the world for a decade at this point. Not at all shutting the door on him, but feels like a couple more years are needed to cement it.
Styles: I simply haven't watched enough TNA to fairly judge him, which is something I hope to do over the next year. Easily my Most Outstanding for 2015 and deserving of major kudos for getting over as a foreigner in Japan the last 2 years. But again, no real points in my book for drawing in ROH or anywhere on the indys, so will need to feel out just where the work ranks as that seems the meat of his candidacy at this point.