No way will they imo, they're invariably on the side of big business, builders and developers so it would almost be directly opposite to everything they stand for.
Can't see them listening to a load of fanatical cultural zealots after the steps the club have already taken to satisfy the main objections and accomodate their remaining sensibilities. UNESCO are just becoming too politicised in their approach and ignore all good well argued commercial considerations, potential area development, potential new jobs and the effect cancellation would have on people's lives.
Only one thing matters to them, their idealistic and unrealistic goals take priority over everything, it's like their religion - they're a bunch of true idealogues and hardcore zealots on a protest march around the world.