I'm pretty sure this has to. And I listed down some of my reasons:
1. Jessica Cruz's parents.
2. Keith Ferguson's overused characters.
3. Super Villain Girls' 7th member.
4. Tween Titans voice actors.
5. Schedule delays
6. Katana or Lightning as the 7th member of the Hero Girls.
7. Babs and Barry relationship (YIKES!)
8. Less merchandize
9. Untitle Batgirl Meets Batman episode.