I want to see a Dragon Ball Super movie focused on Vegeta.. "Vegeta's Resolve" where he's constantly thinking about Planet Vegeta, and since his attitude towards human (and saiyan) lives has (sorta) changed since way back then.. The planet's fate and the saiyans' fates haunt him.

He trains with Whis, with Kais, and on different planets to achieve a more powerful but tamed super saiyan blue form and he learns new techniques that's he lacked in comparison to Goku.. like Kaio Ken and Instant Transmission.. but his techniques are unique.

Meanwhile, Frieza tricks/persuades Broly into supporting the Frieza force (might already be an idea in Akira Toriyama's head.. as it's hinted at in the DBS Broly movie), and Frieza comes to destroy Goku and Vegeta because.. he wants to be the most powerful in the universe..

This presents to Vegeta an opportunity.. to finally destroy Frieza and avenge the saiyan race. Goku takes on Broly, and without Frieza's consent.. Vegeta takes on Frieza.. destroying him...

I'll leave the rest to our imaginations.

At the end of the movie, the Dragon Balls are used to revive planet Vegeta and its inhabitants the way it was before Frieza destroyed it.

Also, there's a ton of opportunities here for introducing Vegeata's brother.. whether he survived the saiyan genocide, or is brought back to life. This is also an idea Akira Toriyama hinted at in DBS Broly.