Without FNC Versus is non-existent.
then Versus-XV should keep the FNC elements.
there was a reason why they took FNC elements out, probably because they wanted to avoid any association since XIII saga was so unpopular; this still holds true today, so i don't see them reusing FNC elements at all.
@Storm I think the removal of the elements had more to do with making it a numbered title, because Type-0 HD was released with the FNC intact if they truly were afraid of the FNC they wouldn't have made a Type-0 HD, and from the looks of it, they didn't exactly have that many FNC elements in it, throughout all the trailers there is no mention of fal'Cie, l'Cie, just Etro.
@Storm It also could have for time reasons, because we don't exactly know how long it would have taken to develop certain parts of FFXV with the FNC inside of it. I don't think anyone would be adverse to Etro showing up since she barely had any screen time in the FNC anyway.
In fact for a Versus XV to work just include as much FNC references as Type-0
Separate names with a comma.