I honestly think that Sydney should get very little, if any of the world cup. Maybe a Lebanese pool game or two to be played at parramatta stadium, but that is about it.
The final Should be played in Townsville. That guarantees a sellout, regardless of who is playing (How many would show in Brisbane or Sydney if Australia were knocked out in the semis in a one off defeat to New Zealand or England?). The Townsville final would sell out before a ball is kicked. Plus the atmosphere, media coverage and excitement of an early final would result in a Townsville group game (say Wales vs Ireland or whatever) also receiving greater interest than normal and getting very good games. The Semi Finals must go to Brisbane/Newcastle and a New Zealand city, presumably not Auckland. The remaining Australian games cannot possibly be wasted on Sydney and must be played somewhere that a crowd can be guaranteed - probably Melbourne or Brisbane. If there is a gamble on somewhere it will and should be an area like Perth or Adelaide, where some promotional good can come of it. The NZ Group games will obviously be in New Zealand. The PNG Group games will be in PNG where they will guarantee a sell out. It just doesnt leave any room for Sydney