This could be interesting but being used to and a big fan of the animated incarnations of the Teen Titans a darker, more serious (Teen) Titans is definitely going to take some getting used to. I'll definitely miss hearing Cyborg yelling, "Booyah!" and Raven's azarath, metrion, synthose. Now if they make it like Young Justice with the same quality of writing then I'm going to definitely be watching it.
The comics (80's New Teen Titans), for the most part, were of the dark and serious tone and violent especially stories involving Starfire. Arcs involving Trigon or The Brotherhood of Evil were usually sadistic. The Omega Men crossover was brutally violent.
I don't expect the show to be overly violent but I do hope they go with the tone of the comics during the Marv Wolfman/George Perez run.
DC is ALL over the place with tv and films. I think they are behind the 8-ball with Marvel's success and are trying frantically to catch up. This sounds cool but i sounds like it may be confusing for the general folk if these aren't in a shared universe. Look at how many people are still confused why Christian Bale isn't Batman in Dawn of Justice.
Would be interesting if there would be any continuity with the other TV shows and the movies. Particularly with Cyborg as he's making an appearance in the BvS movie. And then the relationships (if any) between Wally West and Barry Allen as well as anything between Donna Troy and Diana.
And then you have the child of a demon (Raven) and the alien (Starfire) and if they're going to change their origins. I also hope they go with Garfield as Changeling instead of Beast Boy.