Hi heavyblimps! :)
You sound like a very accomplished person. I can't say I've met many people who can call themselves a published screenwriter. Impressive! Have you written much in the way of original Pokemon stories before?
Maybe when you're not collabing on ROM Hacking, you can post a bit in
Fan Fiction & Writing? I'm sure they'd love to see some of your work.
But in the meantime, you'll definitely want to check out the
ROM Hacking Section. It's an excellent place to get started with collaborating and sharing ideas when it comes to game development. As far as I'm concerned, PC has the best resources available for devs of any skill level - and can help with whatever stage you're on in your development process. :)
Making a ROM Hack is not an easy task, but there are many talented devs here who can help. Best of luck to you and happy posting!