Things like the golden gate and crane game being there but closed aren't to give players the false impression that staff are adding stuff, but to be immersive. It was the same deal with the archery. You're only complaining because it gives you a clue of what's to come and now you think it's taking too long, but if they were never added until they were completely finished you'd be safe in ignorance.

In fact the golden gate as far as I know was never intended to have content. It's there purely because it's part of Classic and it's wrong for it not to be there.