1. We might start with 16 players, and if popularity is high, then we can obviously increase it accordingly.1: It´ll be hard to find 32 players willing to play the game I think. Maybe not in the beginnings but after a while.
2. Players might complain about randomly chosen teams.
3. Players might complain when their teams get splitt up. "All the good ones are in the other team now" -rage- -quit-
(Just my opinion. Not necessarily based on facts.)
All in all I don´t really see a difference to survival games. Yes in your suggestion there are actual teams but if you´d team up in survial games it would have pretty much the same effect. 12- 16 players spawn and they fight till 3 are left. Then it is 1v1v1.
Although I have to say it would remind me of a war. But for that I´d like two teams on two ends of a map. After a countdown everyone can start running to middle. In middle is then a huge battle. You could either splitt the winner team again afterwards or just leave it by that and the players in the winner team are the victors! That would be basically just killing each other but that is what war is... unnecessary killing.
2. Perhaps choosing teams? Or choosing teams based on skill? Like someone who is the best is the lobby is with the worst player in the lobby.
3. 2 answers this.
Survival games is mainly 1v1v1v1v1v1 (ECT.) whereas this is team based, with strategies and whatnot.
If it reminds you of war, then haven't you seen movies with war type things, like Prince Caspian or something? Because if you can handle this, and if you can handle in Survival Games (baring in mind that it is more similar to a war) the you'd be able to handle this. :33