It would be a live action tv series for HBO or Showtime and be grim and violent and more in line with the nature of some of the comic books which could be quite violent at times. I would use as many villains as possible. Harvey Dent would be a main character and build up to him becoming Two Face in the third season then become a villain that shows up once in awhile. Selina kyle would show up as Catwoman and use her story line from the comics where she works as a part time prosttute with her friend Holly. Catwoman and Batman would have a love hate relationship just like in the comics. Somtimes she would be the villain other times would team up with him. Vicky Vale would also be a major character. The first season would take place shortly after Batman Year 1 with Bruce Wayne being Batman for several months now. Besides comic book villains the show would deal with more real life crimes such as serial rapists and serial killers, abductions. It would be a Batman series for advlts.

batman beyond basically the old tv show but live action although I think animated Is 100 times better just look at superman animated and smallville if you like that kinda stuff watch arrow
most of the series is on Hulu it's kinda stupid to make a batman show when there Is a green arrow show both are really similar

https://www.youtube.com/watch?v=-EEyQIAemn0

Would make it just like the really old one excpet the words that pop on the screen will be changed to profanity and derogatory insults.

I didn't know there was a green arrow tv series I didn't like Smallville I tried watching it on Netflix I couldn't make it through the first season

I didn't like smallville that much either but the season finales are amazing and after season 5 or 6 it changed directors and got more action based then it got good
I highly recommend arrow it's repetitive at first but really good