Even if we had access to it at the moment, it would only really be useful for establishing shots due to copyright. They’re not gonna allow you to describe certain things like “lightsaber” or “TIE fighter”.
We’re gonna have to wait for the open-source, community-made models which are trained on the Star Wars films themselves. This might be another 5 years. Any company which allows Star Wars images to be generated with their software are gonna be sued into oblivion.