Dunno, I can't see how allowing rape and allowing dragonborn in your campaign are equivalent. I don't get uncomfortable trying to describe dragonborn. I don't know anyone who had a bad dragonborn situation, and I don't think small children and the elderly need be shielded from graphic depictions of dragonborn.
While in theory they could be used as examples of aesthetic choices, I fail to place them on the same level.
Now, the more appropriate question (and the little more grandma-friendly) is how should players and DMs react to the removal of expected game elements (races, classes, magic) and what compromises should be reached so that both parties reach a mutually agreeable place?
Remathilis, who hopes to never type "dragonborn" and "rape" in the same sentence again...