I love the idea behind it... 2 things i see that are a bit annoying...
1) When looting a crate or box... and your inventory fills up (aka looting to go out roaming or something) it doesnt auto go into your backpack in taht regard..
2) as an admin.. when i gave myself like 40 spears in order to test if it overflowed into my backpack. it didnt do that either...
but... if your inventory is full.. and you pick stuff up off the ground.. it goes to your backpack... so it does the function correctly.. just not... how peeps would use it most is all :)