Is there a second nightmare before Christmas?

Answer 1

No. Tim Burton rightfully wants the movie to be a classic and an original.

He, like any good writer, thinks if Jack goes to another town, and follows a similar pattern to NBC it would be repetitive and stupid.

Also stop motion animation is a dying art these days, and it would be hard to get funding for an unoriginal idea that would take years to complete.

Nightmare Before Christmas will remain the way it is, a cult classic so good and so well known that it doesn't need a cash-cow sequel to ruin it's reputation.