More Saiyans

You mentioned one that focuses on Bardock before they all got killed though.
I was liking your idea of Bardock centric movie before the event of the destruction of planet Vegeta, now if that produces new Saiyans that join Kakarot ,Vegeta, and Broly I am fine with it.
 
I was liking your idea of Bardock centric movie before the event of the destruction of planet Vegeta, now if that produces new Saiyans that join Kakarot ,Vegeta, and Broly I am fine with it.
We had a Bardock movie already where it showed other Saiyans before the destruction. The end of the movie is the end of Planet Vegeta pretty much.

I think this is why they introduced Saiyans in another universe in Dragon Ball Super, so they can explore them more without messing up things they already established.
 
We had a Bardock movie already where it showed other Saiyans before the destruction. The end of the movie is the end of Planet Vegeta pretty much.

I think this is why they introduced Saiyans in another universe in Dragon Ball Super, so they can explore them more without messing up things they already established.
 
I would agree with you when it came to explore other universe Saiyans, but I do think A T had regrets with only having Kakarot and Vegeta being the only lone survivors of planet Vegeta hence why Broly was added in Super Broly, also I felt that A T left multiple doors open in Super Broly Movie for more Saiyan Survivors, either by what Bardock and Gine did with Kakarot, or When Napa, Raditz, and Vegeta, and the other two Saiyans didn't answer the call to return home I feel like there could have been more of them, now that I think about it the Broly Movie could have been 10x better minus Frieza and had Pegasus as the villain and had support from the scientist incubator lab on Planet Vegeta.
 
I would agree with you when it came to explore other universe Saiyans, but I do think A T had regrets with only having Kakarot and Vegeta being the only lone survivors of planet Vegeta hence why Broly was added in Super Broly, also I felt that A T left multiple doors open in Super Broly Movie for more Saiyan Survivors, either by what Bardock and Gine did with Kakarot, or When Napa, Raditz, and Vegeta, and the other two Saiyans didn't answer the call to return home I feel like there could have been more of them, now that I think about it the Broly Movie could have been 10x better minus Frieza and had Pegasus as the villain and had support from the scientist incubator lab on Planet Vegeta.
I don't think he regretted it. I mean he got to a point where he hated drawing the tails on them so just randomly did away with it by the time Goten and Trunks became a thing even thought Gohan had his tail.

Vegeta's brother (Tarble) was introduced but he was a very minor character who I am not entirely sure is even canon.

If they were to introduce new Saiyans, I think it would have to come through Beerus and finding his replacement because he and Whis and search the entire universe to find them. It would have to be written well and heavily considered to not misstep any of the lore.
 
I had a theory that Bulma (and her father) are actually Tuffles and not from earth which would explain why and how they are super intelligent. I wish they would have played into this a bit because that could have expanded things with the Saiyans but it is a bit too late for that now.