Like anyone who plays a game for a certain length of time I've become all opinionated about how the multiplayer works. Deciding what needs fixing and sorting out despite my lack of knowledge about the complexities of game design. So without further ado here are my potentially game breaking ideas of what to change:

- Give the standard infantry the ability to use a second badge
- Reduce the cool down time for any second badge used by the infantry by 20% (as an incentive)
- Reduce the Medic's Revive guns cool down by 25%
- Dropped medi-packs appear on radar
- Any player revived by the medic would be given a 5-10 second window where (if no kills are made during that time) another death will not be counted against their overall score
- The repair ability can turn enemy ammo dispensers into friendly dispensers without the need to destroy them first
- Destroying an enemy ammo dispenser will drop a small amount of ammo relative to whatever gun the player is carrying
- Deployed spawn grenades will sensibly determine which way you are facing when spawning (either towards enemy territory or so you're not facing a wall)
- No initial invulnerability when spawning from a deployed spawn point
- Spawn grenades can be defused by the engineers repair/hack ability (with a timer equivalent to defusing a bomb)
- Spawn grenades will 'go out' quicker if unused for a certain amount of time (to discourage silly spawn grenade placement and allow a sensible tactician to be able set up another spawn relatively quickly given the burden of the '2 spawn grenades per team')
- The rocket launcher would have reduced damage (any player on full health caught in splash damage will be reduced to an amount of health comparable to a shotgun hit, any player hit dead on will suffer instant death)
- The rocket launcher would have an increased ammo count (from 3 to 6)
- The saboteur's disguise would be removed if they fired their weapon, regardless of whether it was at an enemy or not
- The saboteur's disguise cool down would be increased to encourage more sensible use of the disguise (as opposed to the current tactic many players employ of put on disguise, run into enemy territory head on, shoot, die/rinse repeat)
- The disguise not as easily revealed when focusing on a enemy saboteur from close up
- Disguise removed when shot at a couple of times (as opposed to instantly after one shot)
- C4 would emit either small light radius similar to that of the air support beacon (though not as large) or a faint beeping sound, allowing a more cautious and observant player not to run head on into a trap
- The scout's cloak would be removed after firing a single shot regardless of whether it was a hit or not
- Reduced magnum damage at longer distances

Well that was longer than I thought, other than those few points I think the game is great! Feel free to add your own suggestions or openly criticise mine because they adversely affect a class you like.

i didnt read all that, but i haven't played the game for over a weak, mainly due to the release of re5. 

A lot of your idea's are good, but a lot of the class stuff you said seems just to hinder classes you don't like.  I would just change things to make some classes not useless.  I would make turrets and sentries slightly harder to kill.  Give the tactician more incentive to be him.  And yeah, I like that idea about making the original infantry have a 2nd badge and faster down time.

I haven't played the standard infantryman much at all but his LMG is pretty fierce which more than makes up for no badge ability.

The rocket launcher should be only deployable from a crouched position and with the iron-sights up. Also if you fire it two feet in front of you: you die.

With a game that looks as good as this I'd like to see more HUD options so the screen is less cluttered with info.

A hardcore mode.

No assault class.

The only thing I would change would be the controls.

"I haven't played the standard infantryman much at all but his LMG is pretty fierce which more than makes up for no badge ability.The rocket launcher should be only deployable from a crouched position and with the iron-sights up. Also if you fire it two feet in front of you: you die.With a game that looks as good as this I'd like to see more HUD options so the screen is less cluttered with info.A hardcore mode."

A better killcam. TF2 style where its a single frame but exactly where the enemy is and not just in the direction he is from.Also its not black and white when youre dead.
After you max out your XP you can start from fresh if you want and you get a badge next to your name or something impressive like that.I think theres something simmiliar in COD4.

Radar medic packs is a good idea.Its frustrating to play medic without a mic.