Cass was also Orphan at the time as well so Greg probably went with her more recent identity. Cass hasn't been Batgirl for years at that point.
It's a symptom of putting all eggs in one creators basket. Sometimes, they might not *get* certain characters or why certain elements are important.
I'd generally blame Didio for many things, but Weisman's affection for the Silver and Bronze Age is apparent.
It's kinda telling that Kyle Rayner or Connor Hawke haven't shown up yet.
Tho in Connor's case it might be because they might want to figure out a backstory for him that doesn't make Oliver Queen a deadbeat dad.
I get that DiDio was horrible for the comics, but why do people keep blaming him for how things pan out in adaptations? He has no control over that stuff and the only comic guy from DC with any influence over that is Geoff Johns.
Mandate is a strong word. Levitz suggested the idea of Hawkgirl being a mole and the creative team went for it.The DCAU have to ask permission to use DC characters and they also get feedback from Levitz on how they're going to use those characters. For instance, DC was not okay with using the JSA so they came up with the Justice Guild onstead instead and they also weren't okay with how Hawkman was going to be used in Starcrossed so they replaced him Hro Talak (notice that his name is an anagram for Katar Hol?). For Superman:TAS they also had to follow the 'Last Son of Krypton' guideline so Kara couldn't be Clark's biological cousin and instead came from the sister planet Argo but they acted no differently than actual biological twins.
So yeah, DC has some say over how their characters are depicted on screen. I doubt we are going to see stories were Barry is killed off, Hal becomes evil and calls himself Parallex or any of the Titans generation meaningfully replacing their mentors stories any time soon.
speaking of young justice, heres some art i requested from a fan artists on reddit.
We have Wally at least until next March: https://www.cbr.com/the-flash-jeremy...est-interview/
If Wally and Linda go out for a night or they are both busy with their jobs, who would babysit the Irey and Jai?