That new dragon ball super movie he chose a very different path than usual. Feature films have always focused on Goku, the series' historical protagonist, who wasn't supplanted by Gohan even during the Majin Buu saga, where it seemed the boy was destined to be to become the main character of the series.
But all of that happened in Dragon Ball Super: Super Hero. It has long been known that Goku and Vegeta were busy with something else and let Gohan and Piccolo take the spotlight. The two who remained on Earth faced a new threat from the restored Red Ribbon Army. Anyway What was the role of Goku and Vegeta in Dragon Ball Super: Super Hero??
The appearance of the two historical figures is very limited to the beginning of the film. In the short time they have been shown, ie two trained against each other and with Broly, the Saiyan who returned after the feature film dedicated to him. The two were supposed to teach Broly how to properly use his power, but they ended up fighting each other to see who was the strongest.
As such, her role hasn't added anything to the story right now, unless it's all repeated in a future series that will expand on what's happening. And Toriyama also spoke about Goku's absence in the film.
