I'm sure we all have one DM/GM that has his own house rules that you either love or you love to hate. I'm just curious as to what those are? Who knows we might all have something that someone else it looking for, or looking to help improve or dis-prove. But anyways, here's one that I made up for when I run Star Wars d20. I'm not looking to hear about any specific system or if it's a skill/feat/or just a plain different way of looking at a rule. Here's my new Feat for the "Personal Weapon" Feat.
Personal Weapon (Feat)
"You have devopled a close, personal bond with a specific weapon because of everything tha has happened to the both of you."
Pre-Req.- Weapon Familiarity Feat for the weapon you wish to apply this to. Weapon must be personalized, the character must have done it. This feat only applies to one individual weapon, not all weapons of the same type. You can gain this feat multiple times, but mus be applied to a different weapon each time.
The weapon recieves a +1 bonus to critical threats
Damage dice increased to the next larger size of dice. (i.e. a weapon that normally does 2d4 damage will now do 2d6 damage)
+2 to Search and Spot checks to locate your weapon.
Weapon personalization losses its penalty.
Value of weapons goes to 1/3 of the market price, the value of the gun is sentimental in nature.
If anyone but the character uses the weapon treat it like the normal version of the weapon, but imply a -1 to both attack and damage.
Don't forget to give the weapon a personal name!