The phrase "addition to the discourse" is correct and usable in written English.
It can be used when referring to something that contributes to or enhances a conversation or discussion.
Example: "The recent findings provide a valuable addition to the discourse surrounding climate change."
Alternatives: "contribution to the discussion" or "enhancement of the dialogue".
Milan does not currently have a public museum for contemporary art and we believe the Fondazione Prada's exhibition space will be a really interesting, thought provoking and important addition to the cultural discourse, not only in Italy but in general".
The locating and restoration of Romance Tropical is an invaluable addition to the ongoing discourse surrounding Puerto Rico's national cinema, or lack thereof, yet it also raises questions of ownership due to the complicated geopolitical relationship between Puerto Rico and the United States.
Rush Limbaugh, whose Octomom-like ubiquity is ensured some significant extension thanks to his use of the term "Butt Boy" -- which is always an awesome addition to the political discourse.
In addition to the short discourses which have for some years formed a popular feature of the exhibition, a new departure was made by the introduction of several interesting experiments illustrative of recent research.
Power, Justice, and the Environment is a noteworthy addition to the environmental justice discourse.
In addition to poisoning the discourse with obvious fakery and lies with only scattered off-air glances behind the crazy curtain, he's able to convince millions of his listeners and viewers every day to activate against their own best interests, while arming them with embarrassingly misleading and outright false information.
In addition to the influence of dominant discourses related to gender, factors such as employment, and access to resources played an important role in shaping the gendered dynamics relating to parenting and tobacco use.
In addition to the challenges of dividing discourses, decisions about the content of cancer rehabilitation were complicated further as many of the required services had not been subject to sufficient and stringent research.
The unanticipated chronic dimension of illness in general causes frustration in addition to the suspicion of treatment ineffectiveness, or the potentially more deleterious effect of distrust of medical discourses.
