I went to learn more about Tye before posting to this thread. I'm shocked to discover that Dillinger is/was Gavin Spears. He had an uneventful run as part of the 2006 ECW revival. So in a way, Dillinger was a part of the main roster, where he ultimately failed and was released.
It's fair to note that ECW was a C brand, and NXT is essentially ECW and FCW rolled into one, so his main roster status is debatable at best.
The Perfect 10 gimmick has been a lot of fun. The promos reminds me a bit of Scott Steiner's match outcome math promos, though a bit more logical and with less roids.
He's not the first one to use perfection as part of a gimmick. Curt Hennig obviously, Shawn Stasiak also did it in WCW. The thing that troubles me is Tye has basically been booked as being anything other than perfect.
Gavin Spears did nothing but lose, so too has Tye Dillinger. His gimmick is fun, but are the NXT fans responding to it the way they are because it's NXT? These are the same people No Way Jose is getting over with right now mind you.
Tyler Breeze won a lot of matches in NXT, he lost the biggest ones, but won a lot nonetheless. Dillinger has mostly lost his small and big matches. You have to wonder if a move to Raw or Smackdown would really do anything for him other than lying down for the main roster.
Another factor to consider is age. Styles, Aries, Nakamura, Joe, Anderson, Gallows, and likely soon others are all debuting north of 35. The difference here is all those names bring their own brands and most are former world champions. Tye Dillinger is essentially on the wrong side of 30 to be still figuring out a gimmick and a brand. Age is irrelevant, if the best performer is over 30 then he's still the best performer. It's just not a great position to be establishing yourself at that age.
I'm a Tye Dillinger fan, but I'm also a staunch realist. What is over huge in NXT isn't necessarily going to translate into main roster success. It would be a different story for him if he was never released in 2009, and now time may have passed him by. I have no doubt he'll be a decent midcard hand, but that place might be best in NXT.