C20 added a bit about:
For each level of
the Title Background a member purchases, a part of her body is
replaced with a fully-functional artificial component: a clockwork
eye, a stained-glass heart, a steam-powered brass hand, etc
In game terms, these replacement parts provide no innate
mechanical benefits, though they could potentially be used to
justify purchasing related Merits or even Treasures. However,
for every two replacements a character possesses (round up),
she suffers a ā1 penalty to all dice pools related to Animal Ken,
Empathy, and Subterfuge, as her increasingly artificial nature
makes it harder to relate to others.