Idea: If this game ever gets an offline campaign mode, the FT side should have you play as Dutch, complete various missions, and the final mission in the campaign is to kill the predator and take its mask.
Pred side should have a separate campaign story where you train and hunt FT teams across the various maps, and the final mission is to break into a OWLF Compound to retrieve stolen Pred tech and detonate a self destruct device inside the base. The final boss would be an OWLF Leader Operative, where you have to defeat them to detonate the base. After killing and Long Claiming the OWLF Leader Operative and detonating the base, the Predator would be victorious and have the end cutscene with the destroyed base in the back and the Skull+Spine in his hands for the standard FT eliminated cutscene type animation.
DLC for campaign mode would be alternate non-canon endings for the campaigns, where you play as The Predator that hunts Dutch 2025, but instead of Dutch killing the predator and taking his mask for armor, the Predator kills Dutch. Alternately, you would play as the OWLF Leader Operative and kill the campaign Predator and defuse the self destruct sequence.