Hi there Charles, long time listener first time poster…
Not sure if it’s already been suggested, but I think being able to trait pistols to pierce (either on all shots for a Master trait, or possibly on dual weapon skills for a Minor) would go a long way towards making dual pistols a viable build, and may reduce the reliance on shortbow as the dedicated secondary/ranged choice for thieves.
And just on a side note, great work on steal. I didn’t think it was going to tickle my fancy when I first saw it, but it’s ended up being an excellent mechanic.