You could do a prequel with Hopper's men. I see a scenario where we see Hopper's team arrive, they die, and we follow someone else during the aftermath of Jungle Hunter and maybe the OWLF showing up.
So the beginning of the film is establishing what's up. A special forces unit is sent in, we see them slaughtered, and our hero sees this happen and haul ass since they're probably local and know what Jungle Hunter is. The film could be about them running since there are sections where Jungle Hunter isn't around in the original film. Or it takes place in the aftermath of Jungle Hunter where the OWLF arrive and want to see the crimescene and interview locals. Already an enemy and risking being put in a box for simply knowing what killed Hopper and his men as well as Dutch's team they become an enemy of the OWLF.
Given the situation with Gary Busey I'd be up for bringing Traeger back for our human bad guy.