The Justice League has been DC’s all-star team from its earliest founding. That is, unless you’re aware that the original purpose was to give exposure to the company’s lesser-known heroes, which would be why Superman and Batman only made sporadic appearances in the early missions because they were too busy to actually attend missions and meetings.
Some days I wish I could use that excuse to get out of meetings.
But, you know, in retrospect, the League was the all-star team. Then, around 1984 or so, Aquaman told the big names to take a hike if they were too busy to help and recruited some new heroes to fill the ranks for a period while operating out of Detroit. Those new recruits included Gypsy.