So, despite not being a player for long, I love coming up with weapons and hats for the game. Even though the users don't get to choose the stats, here's a few weapons I've come up with

Excaliburn (Pyro melee(Considering making it a Demoman melee instead))
+) Inflicts 6 seconds of afterburn on hit
+) Afterburn affects other pyros
This sword has extended reach, and longer deploy/holster times
-) -15% damage penalty (65 to 55)
-) -25% afterburn damage penalty (4 to 3, 18 extra max)
+++ Max damage in ideal situations is 73

Combustible Constructor
Engineer Melee
*) Sentries are replaced with fire sentries, have a small range, and inflict afterburn
+) +1 maximum sentry
+) -30 sentry metal cost
+) Sentries start at 50hp when construction begins
-) Sentries cannot be upgraded
-) -33% sentry hp (100hp)
-) -50% health from metal during repairs

Poppy Bar
Heavy Secondary
+) Heals 175 Health
+) Guaranteed Mini-Crits for 5 seconds
-) 30 Second Recharge
-) Increases damage received from explosions by 10% for 5 seconds