(nobody is perfect at judging himself, or living according to his own rules. The important thing is to really, actually try. And to learn and correct oneself, step by step - because so very few do even that much)

I can just repeat that i wouldnt use such a mechanic at all. I said small bonus and i meant it literally.
Not something that would override the skill. Just add a small bonus to it.
If that.
Since such a skill is purely well, skill and knowledge related or dependent.

Although, i presume you would need specific sets of different lockpicks - specifically made for specific kinds of locks of the more complicated - non standard kind.
In this case, adhering to reality would result in better gameplay, but it should be designed like this from the ground up.

I doubt this can be applied to OS at this point.