Board Thread:Episodic and Issue Discussion/@comment-47881-20190808132317/@comment-5624498-20190815001508

Regarding Justice League members not getting a lot of screen time, we haven't even had confirmation of all the League members who have joined since the time skip. There's been 10 members who have joined since the time skip. Kaldur'ahm has been given a major role, as one might expect, but otherwise, it's been a small role for Steel, a one-episode role for Katana, a brief appearance by Ice, cameos from Batwoman and Hardware and Fire being name-dropped an episode.

So that's three members or former members who haven't even appeared -- unless Metamorpho is a former member and it just hasn't been revealed on the show.

But when you have 36 people who have had League designations, it's no surprise some won't get screen time. Which may explain why the creative teams plans to focus on a smaller group of characters in Season 4.