One can still setup their own it just can't be shipped with the game (as an unlicensed clone) nor mods supported on the official forums.
I think one could save, pre-patch, the current included NPB model as a template and move that forward to v24. Maybe you'd have to create a game in 23 and import? Then save again as a template to "keep it going"? Some users have already done this, NPB users will have to wait and see what comes of it.
Even if the template idea won't work there is nothing to stop one from manually recreating what OOTP already had. Modders have done bigger jobs with less information. If nobody steps up to do a mod? I guess that speaks a bit about interest and demand.
