Speed, the winner will become a part of the ensemble once the tour ends in February, assuming the show is still running.
Yes, this might be a shameless plug, since I recap SYTYCD for BWW (
https://www.broadwayworld.com/article/SYTYCDs-Final-Four-Perform-as-Jesse-Tyler-Ferguson-Judges-Updating-Live-20140827), but I think all four would be capable additions to the cast. Zack and Valerie's tap background plays to the strengths of ON THE TOWN, but the show uses so many different styles that all would fit right in.
I know Zack has a musical theatre background, as I have seen him in professional shows before, but I would be interested to know if any of the others sing, or even want to do theatre. While I get that Nigel is a producer on ON THE TOWN (and the upcoming AN AMERICAN IN PARIS), I'm not sure how I would feel if the winner took a role from a MT actor even though he/she would rather be dancing in Beyonce videos in LA.