It's mainly for web programming at first, but you can use it for whatever you want to host I guess.
And if you don't want to bother too much making / hosting a website for your mod I guess it's the best solution to use.
You can use git, and you'll have a trace of what you worked on (thanks to your commits), and the repo / zip file will be on Github and not Mediafire anymore.
Anyway it's just a thought, I'm a developper myself (for the web) and putting myself in your place, I would feel it's kinda complicated to see / answers / manage all those messages in the forum and communicate on your changes.
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Btw it's some kind of request but I would like to see more interactions (by that I mean dialogs) with your team members when you arrive to a village / city, like in Kalm or Junon. I think your idea was very interesting, and it reminded me of Star Ocean 2 where you could talk (and eventually date) your party members.
I guess it's not your top priority, but if one day you are willing to work on that, it would be interesting