If we’re doing Siri wish lists, I’d like Siri to be able to hold a proper conversation.
So for instance if I ask to see films starring Al Pacino, and then ask “Or what about Robert de Niro”, I’d like Siri to retain the context of the previous question and show me films starring de Niro.
Also, I’m not convinced that Siri will appear on the Mac — computers are generally used in places where other people are around you (e.g. the office, the café) and speaking to your computer would be seen as obtrusive. Users would become the Apple variant of Glassholes.