He says in the interview he's going to bulk up to 230 pounds for the role. Most actors who play superheroes tend to have vigorous work-outs anyway since they aren't that muscular when they aren't doing superhero roles.
I've seen some speculation that the character we've been thinking was a female version of Samurai may actually be Traci 13.
That could be interesting, actually. It could go either way. Because Samurai had wind powers right? If the girl is a female Samurai maybe she could be Red Tornado's protege. Or Traci 13 would be a big boon because there's currently nobody on the new team skilled at magic, right?
At Comic Con someone did ask about Zatanna and they said she'd get more screentime. So far they've gone back and revisited everyone on the old team except Rocket and Zatanna so I have to imagine they'll do something with them. Especially since Rocket had the hots for Kaldur and now he and Artemis are getting a bigger focus.
So let’s sum up the panels. Young, blonde haired girl with purple glasses gets kidnapped and replaced with a red haired girl with purple glasses. Could this be meta commentary from Mr. Morrison on Stephgate? Morrison and Batman Inc has always been filled with little easter eggs, maybe this is just another. Though you be the judge.
If you read Action Comics #9 (also by Morrison) there was a not so subtle jab at DC and Warner Brothers over the recent handling of Superman, and Morrison has a history of doing little metacommentary in his books.
As an easter egg, it would sort of make sense. Grant was using Steph as Batgirl and Barbara as his Oracle/Cyber Tron Bat-lady in Inc. before the reboot mucked it all up, after all.