Pros:

Like the eyepatch and the lingerie

Cons:

Not a big fan of the tattoo, -0 points
NO EYEBALL -30 points
No fix in first person -10 points

Conclusion:

Deceptive Screenshot. The eye is usually purple (missing texture).
Fix this and it's a good skin

Pros:

Gnome panel
Jockey cops
Soloable
UFO
Worm boss
Weapon panels
Use of artifact gathering
Block pushing

Cons:

More head bosses. -3 points
The area with the gnome. Wall moves too quickly to get  the gnome normally. I had to shoot the gnome until it got closer to the edge and just grabbed it. -2 points
Lack of weapon variety. -2 points

Conclusion:

Very similar to the author's first map, but much better.
Some things to upgrade would be to make the room with the poles operable when you push the tablet. Make the poles go up and down, would be more interesting.

A very good map that is worth downloading.

Pros:

Link
The straps turned out well.

Cons:

Some minor clipping issues. -5 points
Eyes are blank, blue, or turn into the missing texture purple. -20 points
Link replaces Coach, he becomes large. -5 points
First person view has no change. -10 points

Conclusion:

My favorite Coach skin. Change the First Person view and the eyes and this mod is godly.

Pros:

Soloable
Puzzlish
Bosses
Lots of Tanks in good moderation
Wall of Crush
Small size

Cons:

Lack of ammo pile (I know you can go back to the pedestals in the corner room to get some, but there should at least be an ammo pile at the stone pedestal in the middle.) -3 points
Graphics are very sharp and need some smoothing. -3 points
Lack of weapons. -6 points
Lack of directions on what to do. -2 points

Conclusion:

A fun map to do with friends or by yourself. Unlike the Jockey series, this is actually soloable.
Recommended for people who like to figure out fairly simple puzzles.

Pros:

UFO event
Unique Item Dispensers
The chute. Awesome.
Nice doors.
Pods of flesh.

Cons:

Last boss battle is  incredibly difficult. -6 points
Lack of supplies at last boss. (I know there is a hidden closet somewhere, but there should at least be an indication of one.) -6 points
Unsoloable. -6 points

Conclusion:

Needs a llittle bit of work on the last boss, but other than that, it's golden.

Pros:

Awesome centipede boss
Starship
Robot Jockey
Knife
Good crescendos

Cons:

No hunting rifle. -3 points
Final boss is very boring and incredibly difficult. -7 points
Unsoloable. -7 points
Lack of supplies in ship. -3 points
Bots as usual, are stupid as hell. -0 points

Conclusion:

Needs some work on the last boss, but other than that, not bad.
Certainly worth a try if you have some friends that like custom maps. If not, then not really.

Pros:

Armored
Facial movement, eyes, etc.
First person arms changed.

Cons:

The tattoo bothers me. -3 points
The nakedness of this skin. -6 points.

Conclusion:

One of the best skins for Ellis if you don't play with a bunch of immature people.

Pros:

Tons of fun.
Tankball
Fully Charged and Spitters!
Solo play can be entertaining now.
Tank Rush and Tank Burn update

Cons:

Lack of people playing user-made mutations. -0 points
Menu screen is really long now... - 1 points
The description section of this website doesn't cut it when you are playing these mutations. -1 points
No internet? You can't play. -2 points

Conclusion:

Highly recommended for everyone who plays L4D2. 

Update: Tank Rush is incredibly difficult. Buff up the survivors by adding regeneration or at least increasing their speed or decrease the amount of tanks that spawn or reduce their health by half.

Or you know... Only spawn the tanks from behind. Even low gravity would help a ton on this. 

Tank Burn is more balanced, but still difficult. Needs less intense upgrades from above.

Pros:

Cute skin that replaces Rochelle.
Nice shorts.

Cons:

No facial movements or eye changes. -11 points
The avatar looks odd. -4 points
The first person view arm looks blocky. -18 points

Conclusion:

Another solid model for Rochelle that definitely beats the vanilla Rochelle.
But only if you don't play Rochelle.

Pros:

A different look for weapons.
Replaces even throwables like pipe bombs and molotovs.
Egg in frying pan. Awesome.

Cons:

Some of the skins look really odd. -5 points.
Health bar changes were unnecessary. -8 points
Pill, medkit, adrenaline changes. -3 points.

Conclusion:

There are better skin packs out there, but this is a very solid pack for those who like the tribal and runed graphics.

Pros:

Looks like he is a fracking killing machine.
Facial movements, eyes, etc.
Arm changes in First Person

Cons:

Namepatch looks a little off, plus Coach isn't really his name. - 3 points

Conclusion:

My favorite mod for Coach. Much better than vanilla Coach. 

Pros:

Facial movement, eyes, etc.
Changed arms in First Person.

Cons:

The sleeves look odd. -2 points

Conclusion:

I don't personally use this mod, because I like Nick's regular suit better. However, this is a solid mod for anyone who doesn't like the suit.

Pros:

Better skin for pistols
Recoil and reloading graphics
Flashlight attachment shows.

Cons:

A bit too shiny. -3 points

Like all mods, doesn't work on Multiplayer. -0 points

Conclusion:

If you like to use the pistols, this is the mod for you.

Pros:

Cute Outfit.
A skirt and thigh high stockings.
Cool Hair
Facial movement and eye movement
Near perfect
Panties!
First Person = Third Person

Cons:

As with other mods, they don't work on official servers. No points deducted.

Nothing is truly perfect -1 point

Conclusion:

The best Zoey skin is right here. 

Pros:

Nice outfit
Hair
It's Cloud

Cons:

No mouth movement. -5 points
No eyeballs. -25 points
Arm clipping. -10 points.

Conclusion:

This has potential and I would definitely use it if the eyeballs existed.
Not recommended in the present state.

Pros:

Facial Animation for lip movement and emotion.
It's Samus.
It's a good skin.
Eye movement
Hair graphics

Cons:

First Person View still shows Zoey's arm. -7 points
It's another Zoey skin, did not deduct any points for this.
The incapacitation graphic is different from other L4D incapacitation graphics. Just shows a opaque image of Samus's face. -4 points
Like all mods they do not work on Official servers, no points deducted because of this.

Conclusion:

Does not quite beat the Teen Angst skin for Zoey, however it is good. I would definitely use this if the first person view got fixed. Awaiting a Rochelle replacement.