@misfit I bought this set just to replace it in my exclusive set. I've had the pizza box sitting in my attic with the t-shirt and other stuff, and the empty package from the original set. Lesson learned is that NECA exclusives really aren't exclusive forever, it seems.
When it comes to actual figures for TMNT, very little has remained a convention exclusive. The Mirage Shredder is one of the few, though different iterations have come, but that exact figure and deco has not made it to a general release. The arcade turtles as well as they have a different deco from the Turtles in Time figures along with the Foot and Shredder. Even that Kevin Eastman figure is getting another release, though it sounds like it won't be at general retail. NECA took the time to sculpt and tool this particular Keno and moped so I always figured a general release would happen eventually. Especially considering that this is probably the look most think of when Keno is mentioned and thus is likely to sell the best. Doing the training Keno first at Walmart was a smart move as I don't know if I would have picked that one up if I had pizza boy Keno already and now I have both.