A full system re-balance is needed. Perks, killstreaks, death streaks, weapons, Generally everything.
Over the time ive played it, flaws are very evident and easy to take advantage of.
Instead of being able to choose killstreaks, Set three killstreak loadouts. Support, assualt, defense. That kind of setup. That way the threee killstreaks will be balanced with each other. Eliminating the over powered harrier sprees that jump to chopper gunner that end with a nuke.
Weapon loadouts, weapon power differences are very clear. Scar and tar most noteable that kill with a four round burst without using stopping power, opens the door to lightweight, cold blooded and danger close loadouts, so you basically have one extra perk at hand. Mini-uzi can be treated as a sniper along with the vector. I personally would take the vector over the half the snipers.
Light machine guns still need balancing, rpd still has far too much power and to counter the pathetic movement speed lightweight and marathon are used with a grip or silencer to produce a running tank, which can support your team from extreme distances with the accuracy of a sniper and the fire rate of a sub machine gun.
Snipers, the one hit kills are atrocious, intervention, cal, m21 ebr and wa2000 are all capable of instant death %50 of the time. So it comes down to fire rate and recoil wa2000 has best. But it dosnt matter since if they see you fisrt theres no room for reaction time.
Noob tubes, they are the bain in every players game. Whats more there a contagious use, if one player uses it other people start and the match just fall into a flak match where certain areas are just bombarded repeatedly. Coupled with danger close, and slight of hand or one man army the player can literally spawn destroy. placing a lancher for secondary doubles the ammo snd effect.
Onto secondaries, 80% of them anit. I have more secondary titles than primary. I have 2500'kills with three of the shotguns, the magnum and all the other secondaries i have at least 500+. Spas has the furthest reach of them all. The nurfing on these weapons was stupidly un-set when fmj ratings are introduced giving you a scatter shot with %50+ chance of one hit kill. Bling pro has made these guns as powerful as primarys, if not more, G18 akimbo with fmj makes alot of corpses since the accuracy and range are unreal.
Heres a kicker, the painkiller deathstreak can take an entire clip of m4a1 without stopping power, though it only takes a 5 rnd burst when used on a normal target. Rpd still takes 3 rnds to kill them but that dosnt matter so much.
Spawing systems are woeful and is easy to spaw trap a team by yourself. Especially on the mappack1 levels.
Bascially the games a spawing ground for noobs and general distastful players. The game has been dummed down so much a child can play it and matches become who can be the biggest prick. In the end i really hope they change alot with black op's and actually listen to peoples feedback after realese. God knows im in no rush to buy it.
Yes i ranted a little bit, but i had spare time while my shows were buffering so i could put a little theory into use.