I can hear it now, our resident Leftist and hedonist lecturing us that the real evil is anyone who views such conduct as abhorrent and those who practice incest, pedophelia, beastiality and homosexuality are more moral and righteous than those who do not practice or engage in such deviancy.
Pandora's box indeed. Santorum was correct, the lynch pin will be the word 'consent' and legals will spend their time defining what that is and what determines 'consent'.