As an Expansion Pack, does "Get Famous" look overpriced?

I see some saying that from the trailer alone it looks like a Game Pack with a full sized world, but if they were to remove that full sized world I fail to see how this in depth acting career and fame system could possibly fit into a Game Pack. From what I understand the world itself is a fully featured game play feature, just like San Myshuno and Windenburg are with their unique game play experiences and opportunities.