Haha, awesome! I'm going to make one body suit and hopefully make it so I can interchange skirts, sailor tops, etc so I can save time and go easily from Venus, to Uranus, to Chibimoon, etc, without having to make the same thing over and over.
And I agree, it'd be something to be a whole group. I'm trying to think of a good time and con.. the soonest could be A-kon? Anime Matsuri just wouldn't be a fair amount of time. (Except for me. I'm a procrastinator. Last minute ft..l.) But as for what con everyone is going to? No idea.