Not according to the desciptions I've seen. Here's how I think it goes down - a Boomer charges at the humans and vomits. Many zombies come. The humans die.
I'm pretty sure a simple cooldown would suffice for that. And Vomit attracts all zombies to one human, so with a full team all you would have to do is cover the one person and shoot the crap out of the boomer.
A Smoker waits in the shadows, and uses its tongue to strangle people, just like Jackie Estacado uses his tentacles in The Darkness. If they try and finsd him, he releases a smokescreen, and in the confusion the humans are as likely to shoot each other as they are the Smoker. Meanwhile, it strikes without mercy. The Humans die.
Once again, you assume that the zombies can constantly use their abilities. I admit that might be somewhat problematic, but I seriously doubt one zombie who, from the videos, dies fairly quickly when getting shot while strangling somebody and can only attack one person at a time (with the strangling) is that much of a problem.
The Tank throws a fucking car at the humans, they all die.
Yes, because we all know that an intelligent team of humans will just STAND STILL while a car flies towards them. Oh yeah, and they always move together within a car length apart. Maybe the tank could kill people with flying cars, but that doesn't seem any stronger than what tanks can do with the AI. It isn't that hard to make a big thing throw the nearest car, is it? If that was a balance problem, which I doubt it would be (this is Valve, after all) it wouldn't matter if a player was controlling it, because the intelligence needed to play a slower moving behemoth who throws stuff isn't that far beyond current AI.
You see where I'm going with this? The game is always set at night, so the humans can't see the zombies (until its too late) while the zombies have night vision, and a sort of human tracking sense.
Humans can do that too. Gun flashes light up the entire area, and flashlights give more than enough range. If you get ambushed from behind by a human player, yeah, you might take some hits, but there are only 4 zombie players at once and that would require NOBODY watching the groups back, at all.
To the question: Yes, I see where you are going. You are assuming the zombies are all powerful and can't be killed due to their abilities (which would be a problem in BOTH modes, not just multiplayer), humans are all idiots who get ambushed and stay within the range of a car together when they KNOW there is a car throwing behemoth in front of them, zombies have no cooldown on their abilities, and basically you just had the idea "this might be overpowered," put on a nice suit of anti-logic armor, and went with the idea like a forum troll or an obssessed fanfic writer defending his work. Also, humans can see other humans as well, FYI.
Think about it: Valve is KNOWN for designing incredibly balanced games. The zombies as players don't have that much of an advantage. Maybe you might get ambushed more often, but that requires you to be either extremely bad with timing or just have an idiotic group in the first place. Maybe the player zombies might put forth a bit of a better fight. But until Valve says that the zombies can use their abilities as much as they want and say that they designed comboes that were clearly broken to be used by player zombies, you are just taking a possibility and arguing it as a full on fact with little knowledge of the actual zombie mode playing game mechanics at this point, seeing as they haven't been officially released. You also fail to assume that, even if zombie players had a significant impact on difficulty, or even a minor one, the spawn system would COMPENSATE. Perhaps there wouldn't BE so many super zombies for people to play as.
[quoteIn my opinion allowing players to choose to play as Zombies is a huge mistake, because the traditional zombie genre has the zombies with the upper hand by default.[/quote]
Are you insane? Zombies NEVER have the upper hand individually. It's 4 player humans against 4 player zombies, and, save the tank, none of them really look like they have the strength to beat a player in one on one combat. All zombies have are numbers, and having a few somewhat smarter zombies probably won't break an experience already designed to make the game easier or harder for you. I also doubt that you can just choose which zombie you play as, because nobody is stupid enough to give somebody an unlimited supply of tanks in a game that otherwise throws them at you only when you do well or it feels like being tricky.
And that was what I was saying - since no-one is likely to choose the humans, and you need humans to start that versus thing, that mode is inherently flawed. You can force people into playing as humans, but when someone gets forced into the ***** team, they're likely to just quit (wouldn't you? You're making others experience better, yes, byut at the cost of your own experience)
Because we all know that EVERYBODY wants to play the easier mode, even though it sacrafices the atmosphere and the main aspect of the game for a nice side mode where you can potentially get shot up by your friends. And that's under the assumption (which you can't back up) that the game would be hideously unbalanced (by Valve, no less).