Well, it's just that I can't really mod or make animations, but I got plenty of stories, designs, missions in my head. For the basics I only need a mapper and scripter, eventually some models, but to spice it up I could use some animations, models, ... .
Unfortunetly that is not what modders want to hear. It roughly translates to: "I have ideas and want other people to make them for me. I won't actually contribute anything, but I'll critique it if it is not what I want."
Modders already have things they're working on so chances are they aren't going to stop what they're doing to do your work as well.
Good luck though if someone joins you.