Bitter experience with DC, I'm afraid. After all, it took quite a bit in the modern run of JSA for Johns to put her back on the team, when she's one of the most important five members of the team, and probably the most important non original member. As for Deathstroke; it seems they simply dropped that. Nor do we know which Power Girl Spears found, or if it's the same one that been shown in group battle panels.