Idk why people are saying MW3 is know different then MW2, 1st off the killstreak system is COMPLETELY different, you can choose between an assault, support, and extra perks. Assault has killstreaks that focus on getting kills, as support usually benefits your entire team. Also on support the killstreak doesnt end when you die so people dont focus on K/D as much. One improvement that i LOVE is that capturing a point adds to your killstreak! Also lets you know what kill you are on in the streak, and kills from your killstreaks (i.e. attack helicopter) adds to the streak as in COD4 MW. there are a bunch of new streaks to experiment with as well. Killstreaks are assigned by which class you choose.
They added Gun XP to unlock its attachments and gun perks. There are More attachments to unlock and theres a bunch of new equipment also. I like the perks in Black Ops way more but i guess its less to worry about what the other player has.
Infinity Ward really tried to make MW3 more team based with the support group and new game mode kill confirmed which is deathmatch where you have to collect dead enemy dog tags before they can reach them. overall the gameplay sucks IMO. For some reason I cant ever aim straight and kills from a distance were RARE. I couldnt get any killstreaks going (though my first one is at 8 - Strafe Run) and i ended up averaging a .67 K/D. I dont understand why i struggle so much with this game when I was constantly in the top 100 or 500 in the world on Black-ops for Score Per Minute in ALL game modes and was ranked in the top 1200 on MW2 for total kills before i stopped playing so I know its not lack of FPS skill.
I agree with everyone that the maps are terrible, theres to many places to look for enemies for the size of the maps and you constantly get flanked and shot in the back. Nowhere near the quality of any COD Maps before IMO(talking about gameplay, spawning, and flow) wheres Crossfire? Crash? Afghan, Sidrow, High Rise, wasteland, terminal?
i always got real pumped when those maps came up, dont feel like that for any In MW3 so far. Ill give it a few more weeks before I make my final Decision on this game then ill try BF3 or just go back to MW2 (talking about those maps got me pumped)