The DCU's upcoming Batman: The Brave and the Bold has the chance to fix a persistent problem with live-action versions of The Dark Knight. For the last 26 years, every movie version of Batman has gone without a significant part of his crusade in Gotham: The Bat-Family. Aside from 2017's Justice League, Bruce Wayne has primarily been positioned as an isolated figure, hunting the corrupt of Gotham alone in the shadows. In truth, Batman should have an entire network of allies and heroes operating working in those same shadows whom he can rely on.
https://screenrant.com/batman-reboot-fix-dc-missing-bat-family-problem/