Wozza stop with your flippin' skyscraper!
I suppose you're partly right but in my opinion if it's not going to change much it should be more of a standalone expansion than an entirely new game. Like what Red Orchestra just did by releasing Rising Storm. They merged all the servers and there's tons of new content and it's a completely different spin on the game. I think if BF3 just kept expanding with more maps + guns, etc then that would satisfy people and then if they created a completely new engine then release a new game then. I don't agree with all this rushed release business. I know I'm a keen Fifa fan and people will say "well they just release the same things every year with new players" but that's why I don't always buy it every year now and if I do I think it's because they've changed a key mechanic to improve the game.
I was watching that BF4 footage looking for things like the behavior of the gun and how many hits your enemies take and how they go down and it just looked exactly the same! It may feel completely different playing it but it does just look like BF3 recycled.
Then again, I don't really know how these games are meant to improve anymore other than new maps and guns.
Okay the graphics are a bit naff at times but 64 player WW2 simulator combat is pretty darn good. Bolt actions sure do some damage. And teams actually work together and use VOIP for tactics rather than to make you listen to stories about your own mother all night.
So much WWII (which I do like) stuff has been done, people forget its only called WWII because there was one before it! 
