I have a concern with this game for Versus.
The best way for me to get in a game is to get in a game lobby. Otherwise I mostly join a team who's getting raped and all I can see is a Hunter over me with the whole team apart of it. FUN! Then I stay in the game and I realize I'm teamed with a bunch of 12 years old full of themselves who just got this game versus a bunch of elites who actually play together as a team.
Screw this. Anyway to get right to the point, I'm bored of the lack of maps, and how every ****ing time the game start we start at the beginning of the chapter. It's getting boring and repetitive when there's a lot more to this game.
The way to solve this would be a random act pick or something. And of course more acts and ETC. We don't give a damn about campaign start in Versus, we just want to play, survive/hunt.
That is why I mostly play, when I can play with the guys on IRC. The game is fun with random people, but it gets repetitive. It is much better when you know the people, and you are on voice with them.
About the choosing chapter deal, I am pretty sure you can do that, atleast in singleplayer. I know that it is doable if you are an admin.