Yvonne Craig was a total doll and cutie-pie. RIP.
We did see other adaptations of Batgirl though, mostly famously Alicia Silverstone is the otherwise wretched Batman & Robin from Joel Schumacher in 1997.
And Batwoman has been adapted previously as well, watch the direct-to-video animated film Batman: Mystery of the Batwoman (2003) if you want to see a GOOD version of the character. That was before DC corrupted her and turned her into a SJW heroine.
I will not be watching this schlocky TV series, though there is a related "Crisis on Infinite Earths" storyline on Supergirl in December (apparently Batwoman will tie into it but NOT be the main focus) that sounds like its worth checking out. They literally went back and got EVERY previous incarnation of live action Batman/Superman actors to show up and play versions of themselves from "alternate universes", even going so far to get Burt Ward (from the 60s Adam West series) back as Robin, and Brandon Routh (from 2006's Superman Returns) back as Superman. Technically he is playing the "Kingdom Come Superman" but he is basically doing the Christopher Reeve version of the character again.
Wish we had gotten that in a feature film instead of a crappy "Batman vs. Superman" movie.