Basically, the 'miniskits' are going to be ad-libbed, made up on the spot interactions between in-character cosplayers who volunteer for it. They'll probably have a time limit to think up what they're going to do (or not think of it at all and just go up and do something), or we could take suggestions from the audience and give them a theme to work with. The general rowdiness is a given, and we're stating ahead of time that it won't be disallowed, so that people won't have to feel we're stifling their creativity or trying to keep them from acting in-character while they're simply attending. We're expecting a level of chaos similar to what happens when hetalia characters interact with each other in the anime and mangas, but if it gets too out of hand, we have methods planned to get the crowd calmed back down.
(we're hoping we won't have to use France's bondage rope, really.)
We're also planning to talk about Hetalia fandom, and the more adult side of it, such as fanfiction, pairings (of any gender variety), things that squick you about hetalia fandom, doujinshi that blew your mind (or mine, I mean really, I've read a few that *censored for age appropriateness*), why fans seem obsessed with certain characters/props/pairings....and Chibitalia seems to want to show some Hetalia AMVs as well....if we can get a projector and permission from the AMV creators.
ON a side note: Several of the panelists from Cannot Unsee and Do Not Want have run 18 and over panels before, and ALL of us have attended them. We know what you guys are capable of, and we come with rope, and feathers. Be warned.