I know it's pretty early for this, but I figured it'd be better to be early than late.
I love acting, I find it very enjoyable, and I'm sure a great many other cosplayers do as well. It's a rewarding feeling to know you've pulled off a character well, and it's awesome to make the fangirls/boys smile.
However, no matter how gorgeous the costume, no matter how detailed and meticulous it is, it can be very embarrassing when someone asks you to do a line/mannerism of the character, and you can't. Likewise, a costume could be awful, but someone who pulls off the character well could and would make people look past that.
This is why I am suggesting an In-Character 101 panel.
I will gladly run it if nobody else wants to, or if someone does I'll be happy to help. We'd discuss various aspects of characters (walks, accents, behavior, etc.) and give examples. The audience would be free to ask for demonstrations of certain characters (preferably if they can describe the character accurately in case we don't know it) and we'll cover improv acting.
At the end, we'll have a few improv games for people to play if they choose. Suggestions are welcome with open arms, and feedback would be greatly appreciated. Toss your ideas out there and we'll see what works!