Primary for Pyro
Base: Degreaser/Phlogistinator
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=248812345&searchtext=

( +/- ) Deals bleed damage rather than afterburn (Cannot be extinguished, thus is an upside, but deals damage slighty slower than afterburn, thus is also a downside. Also, unlike regular bleed damage weapons, does not stack to make it less op.)
( +/- ) On Alt-Fire: Rev up the chainsaw, causing the player to charge forwards at the same speed as a demoman charge, Take 50% more damage whilst charging. Recharges after 15 seconds
( - ) Cannot airblast
( - ) +15% ammo cost

Melee for Medic
Base: Bonesaw
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=439002187&searchtext=

( + ) On hit: Stun the enemy for a certain amount of time and deal a set amount of damage every tick depending on your Ubercharge (For every 1% of uber, target gets stunned for 0.1 seconds and gets 0.1 seconds of tick damage which is 2 damage. So 100% uber is 10 seconds stun and 200 damage. Now, this may seem OP, but just read below.)
( - ) On hit: Drain ALL of your uber
( - ) On death: Any stunned enemies are unstunned and fully healed

Secondary for Medic
Base: Medigun
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=95555575&searchtext=
( + ) +25% faster Ubercharge rate
( + ) +15% heal rate
( + ) Plaguecharge: Gives you and your patient the Plague powerup. Attacking an enemy also causes them to be plagued. Plague victims bleed to death in 10 seconds unless they pick up a health kit or touch a resupply cabinet.
( HIDDEN ) Massed Flies effect
( - ) -75% overheal build rate
( - ) +15% damage vunerability on wearer

Secondary for Pyro
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=385870331&searchtext=

( + ) Flares ricochet off perfectly the first surface they hit
( + ) Mini-crits vs burning players
( + ) Mini-crits after a ricochet shot
( + ) Full crits on a burning target with a ricochet
( - ) Does not fully crit all burning players

Okay, so I was looking through the addcond commands and I found this one:
Crouching causes the player to appear to be a Dispenser of the enemy team to enemy players. As a side effect, forces the player's speed to 450 Hammer Units/second (diagonal movement is at 520 HU/s). Swapping weapons while in this state will cause the player to briefly stop moving, then return to 450 HU/s. This condition also causes Sentry Guns to ignore the player.

I thought it was pretty cool, so lets make it into a spy item!

Melee for Spy
Base: Knife

( +/- ) Crouching causes the player to appear to be a Dispenser of the enemy team to enemy players. As a side effect, crouching forces the player's speed to 450 Hammer Units/second (diagonal movement is at 520 HU/s). Swapping weapons while in this state will cause the player to briefly stop moving, then return to 450 HU/s. Crouching also causes Sentry Guns to ignore the player.
( + ) When crouching: Have a 100% afterburn resistance
( HIDDEN ) Robot Spy animations
( - ) Enemy spies can sap you to disable your movement temporarily
( - ) Wearer cannot disguise

Melee for Spy
Base: Knife
http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=320005287&searchtext=

( + ) On backstab: Victim explodes into bones
( + ) Each backstab fills up a Bone meter (Takes 5 backstabs to fully fill)
( + ) On full bone meter: Get a random spell
( HIDDEN ) On death: Explode into bones
( - ) -15% movement speed on wearer

Melee for Soldier and Sniper
Base: Shovel and Kukri
Model: The Victory mug for the Soldier and the #1/#2 mug for Sniper

( + ) On Hit: target is engulfed in flames
( + ) On Alt-Fire: Take a drink from your mug, giving a temporary speed boost and 50% more awareness (Sounds like cloak and sentries are amplified) for 5 seconds. Recharges after 10 seconds
( - ) -50% damage penalty
( - ) On Alt-Fire Finished: Become 20% slower and 50% fatigued (Sounds are quieter, yes, every sound). Lasts for 3 seconds

引用自 🎁 Festivized Krimmer 🎄：

引用自 Ducky Quackington：

The Big Mann

Secondary for Heavy
Base: Sandvich

( +/- ) When eaten, scream "I am biggest man in history of world!" and become 1.5x bigger. All damage has a 50% increase. Move 25% slower whilst under the effect. Lasts for 10 seconds. The Mega Mushroom music plays throughout the effect.
( - ) Have the tendancy to get stuck

Maybe a max health increase?

What, so a 300 health heavy?

Secondary for Scout
Base: Bonk! Atomic Punch

( +/- ) When eaten, shout "Little small over here!" and become 1.5x smaller. All damage has a 50% decrease. Fire 50% faster whilst under the effect. Move 25% faster whilst under the effect. Lasts for 10 seconds.
( - ) Have the tendancy to get stuck afterwards

Secondary for Heavy
Base: Sandvich

( +/- ) When eaten, scream "I am biggest man in history of world!" and become 1.5x bigger. All damage has a 50% increase. Move 25% slower whilst under the effect. Lasts for 10 seconds. The Mega Mushroom music plays throughout the effect.
( - ) Have the tendancy to get stuck