I read in this in the comments of the offline campaigns co-op run: "Main Campaigns refers to the campaigns that are considered "main" in the original L4D2".
L4D2's Main Campaigns category doesn't have The Passing because The Passing released after as DLC. I assume the intention is to make this the same as the normal L4D2 boards, no?
edit: someone else got a response in DMs, so nevermind
Ethan, it wouldn't be the same thing as a console run - following the current rules of No SLA, you'd have the ability to (easily) make quicksaves and load, you can still use showpos 1 so you can do skips that you most definitely cannot do on console such as pancake skip (at least, not without tons of trial and error - slower than actually just playing intended strats). Plus, console versions only run at 30fps and lower, so it's a big difference.
It's a meme category, it doesn't have to make total justifiable sense.
Same rules as anything else, just controller only
edit: maybe allow keyboard to save/load