I have this really sinking feeling that they'll induct just Shawn Michaels and Triple H, you know, that run of DX where their gimmick was that they were kindergarten Humor shills that sold glow sticks?
Chyna is the only member I see even raising an eyebrow for WWE, as the other 4 members are still on good enough terms with WWE. That being said, Chyna deserves to be in the HoF easily with her accomplishments, Female IC Champion, only female to compete in a WWF/WWE World Title match, First Female Royal Rumble participant. It's too bad WWE is still spiteful over some of her backstage antics though, she was one of the biggest female draws in history.
I don't think it even requires an argument to state that Degeneration X, the one people care about includes HHH/HBK/Road Dogg/Billy Gunn/ Chyna, and that's how it should be done, WWE's sucked it up and had people that weren't on the best of terms and inducted them to make the Hall of Fame for the fans.
I think HHH should go in individually after he's hung up his boots for good, so probably around 2020?
nWo I don't see going in until Hulk Hogan's troubles pass and he's back in the HoF himself. Hulk Hogan, Scott Hall, Kevin Nash, Big Show, Eric Bischoff and Sting would be the people I would put in as the nWo, as putting the entire 30 something roster would be ridiculous. But that's a topic for another discussion.