Yeah, they would need to fix the point spread calculations in the actual game before they could bring back whatifsportsbook as dacj noted.
There were too many ways to exploit the game and too few people were playing it...I also feel like seble (or whomever was in charge if this was pre-seble), shut it down for other reasons just related to "simulated betting". I remember some weird statement coming out about that, but I could be wrong.