FF6 Expansion Editor (FF6ExpED)

Otherwise, I'm kind of a fan of what FFXII did, and that is simply to do away with a Steal formula altogether. It just checks the probabilities for each slot (there are three; 55%, 10% and 3% without Thief's Cuffs, 80%, 30%, and 6% with them) when a Steal attempt is made. If nothing is stolen, the attempt is unsuccessful and you can try again.

I thought about getting rid of the steal formula (optionally). So basically stolen items would work like drops if the hacker wants. As you said I like to keep 1 stolen item per monster, I like rare steal/drops actually being rare.