I'm gonna be honest. The only thing I could suggest here is a weapons upgrade system and/or a custom weapon maker than you can upgrade along the way. (Or maybe both weapons and armor. I also don't want to unequip the Crown of Death.)
The entire game is pretty unique and memorable, basically just below Masters of Raana and fairly close to Trials in Tainted Space and Corruption of Champions II.
None of the previously mentioned games has it and I'm down with making a memorable weapon in the wasteland or at least upgrade one that I liked, like Patricia; the Lee Enfield No4.
Could be nice, extra dialogue options for something like a "chainsaw" weapons or a "scythe". Goes well with the Arena too.
(Edit: Does the Vegan Steak have another purpose? I can't seem to eat it.)