The Flame Rod (Flamethrower)
Model: Something similar to the backburner

+The Huolong heater effect where fire spreads out around you and you lose ammo constantly
+25% Move speed on wearer
+On hit, gain a speed boost
+50% ammo capacity
-Airblast costs 100 ammo
-50% Damage penalty
-No afterburn

The Slick Trick (Spy Knife)
Level 45 Knife
Model: Anything that looks similar to the stock spy knife

+Marks enemy for death on hit
+Mad milks the enemy on hit
+On hit, stuns enemy for 3 seconds
-50% Swing Speed
-50% Damage penalty
Knife cannot backstab enemies

This knife forces spies to help out their team and not just doing their own thing. This can possibly change the way spies backstab enemies but instead, lets the teammate get the kill and you getting the assist.