Is the 360 to blame for the quick release of L4D 2?

[NJ5]

Squilliam said:
"The unpredictability became tactical, not strategic. I've played with people who can call smoker and hunter spawns before they even happen. People who know and scavenge every drop off point. People who know zombie dispersal patterns and bottling strategies. People with flawless plans for every panic event. Essentially, there are only 4 maps, so this wasn't very hard."

I think its needed. A rethink of the game concepts were in order which only could be done with a completely new game. Think of this as episodic content like HL 2 Ep 1/2/3 of which I cannot remember how far they were released apart. L4D 1 is great, but L4D 2 is probably designed to overcome the shortcomings of the title, the way that the game is fundamentally played by giving variety.

Variety can be given with free updates too. Look at Team Fortress 2, which has had new game modes and mountains of maps added in free DLC (some made by Valve, some by fans but picked by Valve).