I'll happily answer, with a strict caveat (the same as with the bar on homosexual couples) that I would argue it has to be clearly public, and that any business who did this would instantly lose my custom.
Yes, I would see that right extended.
I would hope it would not be used, and that any business that used it failed pretty quickly, but I don't feel that sort of restriction, currently, is necessary, fair or appropriate.
I'd rather not, but I'd rather that lack of tolerance to such practices comes from people, than from the law. When it comes from the people, it's genuine, when it comes from the law, it doesn't actually change people's views (or if it does, it's not in the way intended), and just masks what could be an ongoing problem within people's attitudes, and just lead to more indirect forms of discrimination.
The only party that must be prevented from discriminating in this way is any mechanism of the state, because of the differing nature and the monopoly of force the state holds.
Let it be known, thats the first thing I've ever agreed with Dolph on since I started posting in General Discussion!
+1