While I have no hope that this will fail the current council, I will be eager to vote against it in the referendum and if it should pass the public vote, seek legal action against this. Heck, such a thing has no place in our constitution! Pass it as a law if you wish, but keep our constitution unspoiled of this!
Would this be viable as a law, however? I will introduce it, and we may have this discussion.
Since I oppose both polygamy and incest personally, I guess I would have no probelm with this as a law, no.