Eh, I would not say that Agnostics are Atheists without balls. Any Atheist should be able to admit they could be wrong. I am. I'm 99.9% sure there is no God or any such thing, but I don't know for sure. An Atheist who is unwilling to admit there could (however unlikely) be a God of some sort or another is just as bad as the hardliner Christian who debates between homicide and conversion when they hear somebody is an Atheist. And yes, that last part was a joke - you all know what I mean. Anyway, back to Agnostics. Not being one, I can't really claim to be an expert. But at any rate I think of it as a transitional period between Religion and Atheism. They aren't ready to think any religion is right, but neither are they willing to say that there is no sort of god.
Oh, and about the 30% of Americans are Atheists or Agnostics. I personally doubt that is a fact. However I do know that all the studies done on comparing IQ and education to believe in religion have found it be to negatively correlated.
To prevent thread hijacking... I would support such a clan. I probably wouldn't join just because I'm honestly not very active anymore. Although if that didn't matter, well, I probably would just because we have the Jesus Freaks. If they have a clan, why not us too?

And I would love to see some clan vs clan games between the two. All in good fun of course, without bringing religion (or the lack of) into it. Think of it as a good natured rivalry. At first things might need to be policed a bit, but as time went on I'm sure it would turn into a not really competitive competition full of good natured bantering. I think it could be a lot of fun.