Backporting Doom 4 to Classic Doom, would that make sense? Would it even be fun? Hell yes, it definitely is and DBThanatos and his team definitely proved this. A few days ago the v2.0 version of this gameplay mod has been released at the ZDoom development forums and the ModDB. The mod tries to bring the weapons as accurately as possible in looks, behavior and timings. However, the authors also took some liberties regarding some behaviors and balance. Many other features from the new Doom game have been backported so it's definitely a "must play" to all of those who want to have a good mixture between 2016 and 1994.