It always surprised me that Disco never got a run in WWE.  He had a good look, ranged from competent to very good in the ring depending on the opponent, and could work comedy.  I could see him as the mouthpiece for the FBI in the mid 2000’s at the very least.  As far as you know, did Vince just not have interest?  Was there heat on him for some reason? 
Yeah, so in 1997 Disco tried to jump from WCW and get the Rockabilly spot by claiming that his contract was invalid, and Vince was ready to bring him in and started producing material to hype it up.  But then it turned out to be a very valid contract and Vince dropped all interest immediately.   And then Disco had to go crawl back to WCW like Shane Douglas in 2000 and never left.