I quote them all together because it would be overall a nice idea to think about something like boons und debuffs - Something like cursed Weapons that have a huge upside but also a huge down side, could be some sort of an upgrade / Sidegrade to Veteran Weapons
I wouldnt make this a property for weapons, this could be a good start for somehow of an “combo system” you know like - Sienna can throw a fire field / Lamp oil / Fire Grenade and if the arrow passes through it, is sets itself on fire, and ignite enemies with dots. Could provide somesort of strategic thinking in fights ^^
This sounds actually interesting, but i think it would be too random if you cant predict the bounce off, it wouldnt make much of an difference than maybe one lucky shot around the wall into a slave rat every 200 shots ^^
So, if the upside would be “You can predict your bounce shots through a line” like some games make it with their grenade throws to aid the player dont throwing them right infront of something they cant do sh*t but the downside would be “Your Shots always does the half of your damage”, thats would be worth thinking about imo