James Gunn is now heading up an all-new era of the DC Universe, and while many may be excited to see his version of the Justice League, a better choice would be Young Justice. While the DCEU attempted the Justice League in the past, it was an immense failure, and scrambling to get all the pieces together again would be a bad idea. However, Young Justice perfectly fits the bill for the superhero team that Gunn's DC Universe needs. Fortunately, the DCU is already setting the team up – in a way, at least.
https://screenrant.com/james-gunn-dc-universe-team-young-justice-not-league/