This is just an option I am throwing up in the air.
We are doing relatively the same thing but on a larger development scale, we have many core mods that our custom mods are branching off of. We have a full scale development team working on plugins to textures for the mods. If your at all interested in joining our team we can talk about it!
Feel free to add me on skype: sullivannorman
Just type in your username when you send the request so I know its you.
If you aren't interested you can add me anyways and I can help you out if you have any questions.
Cheers,
-Sullivan