Treyarch and Activision are trying to sell fans that Black Ops 2 is the biggest change since Call of Duty 4, and it may be, but that is not saying much, so don't be fooled by the play on the words. As a fan, I'd rather hear.."This is the best game since Call of Duty 4" but I doubt we'll hear that.
Change is only good when you're changing for the better. After doing some dissecting with Black ops 2, it looks to me the biggest change, "the scorestreak system" is going to be a bad idea.
Treyarch's intentions on this new system is that it rewards players for doing all score-related things instead of just slaying.
Why this is bad in my eyes is because it mixes these scorestreaks with every score-related thing in the game. So now the game becomes more focused on scorestreaks than ever before. People won't play the objective based games for the sake of winning, they'll be thinking about their scorestreaks because it is intertwined with all objectives. So in actuality the whole idea of rewarding the objective playing players is hypocritical because all it does is pave an easier path for slaying to get scorestreaks because no matter what, killing is always the main objective in a shooter. These players are not all the sudden going to hop on objectives, in fact they'll play it more safe now because objectives are more valuable than ever to cap. It backfires.
Another thing is AI killstreaks rewarding players with score points. If I call in a UAV I get score points for every kill my teammate gets. Great, I'll just sit back and rack up the points for my next reward. If my teammate cock blocks my UAV with his UAV, I'll rage like a 14 yr old on the mic. Like we need more of that.
Now what you will get in return is a slow and stagnant game because everyone is going to play with caution around the thought of these stupid scorestreaks, especially in objective-based modes. These developers need to take away, not keep giving.