Honestly, I don't see what all the fuss is about. I hated the quick scopes of the last game, so thanks Treyarch, also I don't understand how it's ruined snipers or made them obsolete; you use snipers for long range and handguns for close range. The little remote control car bomb looks fun to drive but I doubt it can climb ladders or jump up stairs and considering the amount of time you spend in high ground in the last game it shouldn't be such a problem, though the difficulty in shooting it maybe a concern. Concerning the over the top kill streaks gaining masses of easy kills, I got used to it and when it was my turn to rain down a bombardment of fury, I enjoyed it.
Nukes gone. Love that, I always felt so cheap when using it.
The one thing I dislike the look of is being able to change your air drop reward, I always liked how you'd run up to the red smoke and pray for something good but instead got crushed by an ammunition drop. Then when, eventually, a decent drop came in you panicked ran quickly ,so no one would steal it, and hide away in a secluded part of the map to drop some bombs.
It's looking good, I'm just upset that I have to wait awhile to buy it because my bank account doesn't like me at the moment.
EDIT. I forgot to mention Zombies.
Zombies.