There are fewer valid reasons not to put Warrior in than there are to admit him and that is what it comes down to.
The only one that would remotely have been a dealbreaker was the holding Vince up for money... but with Trips now calling these shots there is a definite move towards "the past" being just that. Bruno is in, now Warrior... Savage and Owen won't be far behind... indeed I can even see Jarrett going in eventually.
Warrior had a limited WWF career but one that was greater than the sum of it's parts... In reality he had from August 1988 August 1992 as one of the top names, not even 4 years if you take his hiatus and short 96 stint into account... But in that 4 years he became linked forever with the WWF as a main eventer. People talk about wrestling who haven't watched it in years will say...Hogan, Undertaker, Warrior... those are the guys people remember.
Jim Hellwig has been an ass over the years to a lot of people, sniffed the fumes while airbrushing his tights or maybe as Heenan postulated, the arm tassles cut of the circulation to his brain at times... but he hasn't gone out and shot anyone, been arrested, trashed the entire business... he just withdrew from it for a LONG time and then didn't really talk about the business when he talked but issues. Sure his "queering" speech at the university wasn't the best thing to say, but it's no worse than has been said by Greg Valentine on WWF TV back in the day for a promo. So cos he doesn't talk about wrestling, people stopped relating to him in that way... now we're seeing some of "The Ultimate Warrior" coming back, like that game promo rather than Jim Who Changed His Name To Warrior To Piss Vince Off people are getting back into it.
The thing that probably convinced Vinny was that interview where Warrior said "let's not all be pally... there are issues there, let's keep them drawn"... That's not a guy drinking the koolaid cos he needs a payday, that's a guy almost saying "If we're gonna be enemies, let's at least remember why...if we're not enemies, then let's at least work together on something..."