Originally Posted by
Restingvoice
Honestly, though, Batman Robin and Batgirl is the most classic must-have core team
You can include Batwoman if you want
Then the core supporting cast is the Info Breaker, Healer, and Inventor/Engineer.
In this case, it's usually Gordon, Alfred, and Lucius.
You can add an extra helper since Wayne Manor is big
Those are the cast
The rest either has to have their own book because they're gonna be background characters if you go beyond that.
Now since Batgirl and Robin are popular enough characters that can maintain their own book and supporting cast, you can replace them with another set of male and female sidekicks in the Batman books.
Currently, that should be Duke and Cass, but in a different era, they can be different characters, like Jean-Paul and Luke, since Stephanie can be a cast for Young Justice and Helena for Birds of Prey.
Either way, the regular sidekick/supporting role within Batman books should be given to those who don't have their own team or can't carry their own books. The Bat Family's only crowded when they try to include everyone but most of the time they don't.
The big ones like Dick, Jason, Tim, Babs, and Damian have their own books, and they shouldn't be dragged into a Batman book to be assistants, especially the ones who operate in a different city. Unless it's not just a Bat-family crossover, but a regional event that involves the cities they operate, and a kind of anniversary.
While they're a Batfam member, they should be treated more as main characters with their own supporting cast. They've graduated, so leave them be.
Well, maybe not Damian since he's a son and underage...