I heard Adam Marcus tried to make a Freddy vs Jason script, in his version Duke appears again and plays an active role, but it never got picked up. Much like his ambitions for a new movie. By the way Duke did have an appearance in the novelization of Freddy vs Jason but only in a flashback and one of Freddy's mind games that's it.
The writer and director has told many a tall tale over his "misunderstood" entry in the franchise.
Some chestnuts from this interview I'm going off of memory:
He confirms that originally it was supposed to focus on Jason's incest brother who eats hearts. He tiptoes around the fact that the movie was shot with this angle and filming was suspended once New Line Cinema got wind that the movie wouldn't have Jason. All of which resulted in filming being paused over a weekend so the script could be re-written.
He claims he wanted to use CGI to add a digital hockey mask on the possessed Jason bodies (whatever you want to call them).
He claims Sean Cunningham wanted to do a Friday the 13th movie without the hockey mask. This claim might actually be true.
He claims his previous movie, My Boyfriend's Back, was originally a movie about the AIDS metaphor which is hard to believe considering the movie ended up being a teen comedy but this is Hollywood so I chalk this up as being plausible.
He claims people hated Jason Goes to Hell only when the internet became a thing. This is just cope.
He claims that after the movie came #2 opening weekend (and dropped to #11 the following weekend before falling out of the box office charts completely) that Steven Spielberg called him and wanted a meeting. I think the guy is going off of a similar story from Renny Harlin when he directed Elm Street 4 but Renny's anecdote is infinitely more believable because Elm Street 4 opened at #1, stayed at #1 for 3 weeks straight, and (unadjusted for inflation) was the highest grossing film in the franchise at that point... Not to mention that Spielberg is a horror fan. That was a big reason he sought Tobe Hooper to "direct" Poltergeist because Spielberg is a big fan of TCM. Not to mention that Jason Goes to Hell had done only lukewarm box office and just barely hit the 'break even' barrier.
Edit: to give you guys an idea, this is the same chuckle fuck who co-wrote the script for Texas Chainsaw 3D:
He swears up and down that he didn't write the line but I have my doubts.
2nd edit: here's the Indiegogo the guy held and there's still no release date but he's claiming that filming has been completed and they're wrapping it up:
https://www.indiegogo.com/projects/hearts-of-darkness-the-making-of-the-final-friday#/