Im a little drunk right now, but hear me out. We're 8 episodes into, maybe a 20 episode season. 1/3 approximately. At this point we have a group of defected Republic clones running from the Empire, with absolutely no resources, except the ship they stole, which can be tracked. I've lived on the lam, and it's not fun lol. On top of that they have this kid that's being hunted, for some reason, apparently by the cloners who created her. They're outlaws, being actively hunted by fennec Shan, who's a precieved badass from the Mandalorian, who no one in their right mind would confront or attempt to capture. So her reputation is on the line, and I assume this era would be her prime, because she's in her 50s in Mandalorian, just saying. If that isn't bad enough, they're being actively hunted by their former team mate who has all the resources of the Galactic Empire, who knows all of their strategies. To have the best bounty hunter in the galaxy, and the Empire with all of it's resources hunting you down, you'd have to be badass to survive.
You know, with Dave Filloni, without a doubt will add Ahsoka to the story. That's his baby, he's obsessed with her. He killed her, went back in freggin time and saved her. So I think the Bad Batch will have a deeper connection to the formation of the Rebel Alliance. I don't know how they can make four seasons out of this story, but they probably will. After it's all said and done it'll probably be a connecting story between Clone wars, and Rebels. Only problem is there's a 15 year gap between clone wars and rebels, which can't be properly filled in 4 seasons. But if you connect it to Solo, the upcoming lando, and the cassian Andor shows it could create a web of interconnecting stories, which can be pretty cool. Just saying.