I agree that the Broadway is malplacé. Sales of copyrights to musicals have a negligible turnover, compared to sales of records and movies. Modders should feel free to replace Broadway with a non-western alternative (even better if it's non-modern too). I am thinking of Jingdezhen - the Chinese "porcelain capital". It would be available with Engineering and produce Porcelain - less units than the sister wonders, to offset its early appearance. Porcelain would give +1 happiness, +2 with Market.