There are 8 Titans: Dick Grayson, Donna Troy, Wally West, Red Arrow, Starfire, Beast Boy, Cyborg, and Raven.
Of those mentioned above, Dick is the soul of the team, and Donna is the heart. When either one of those members is not there, the family falls apart into the predictable "Super hero" team dynamics. Dick IS the leader. Especially when he is NOT trying to be like Bruce.
Donna is the Mommy, Wally & Roy are the Brothers. Gar is the annoying Little Brother to Middle Child Vic. Raven is the Goth sisterwho likes to stay in her room listening to Emo, while Kory has been in my opinion displaced ever since she and Dick broke up. She was the Nympho girlfriend we all wanted when our hormones first kicked in but was with big brother all the time.
Titans have come and gone, and for me, my favorite team was from the 80's. It was classic and defining. Ever since then, every title has been a pale comparison trying to write a variation on a complicated theme. Writers using these characters have either gone too far with the family theme (Devin Grayson) or usually in the other direction creating caricatures of the actual characters without giving them any real depth or personality. Writers not using them tried to go completely different.
Young Justice/ Teen Titans was a natural progression, You can't go home again, so I think it best to try not to revisit the past every other year. Unless DC editorial is willing to go long term (5 years at least)on a Titans book where this is the primary book for these characters, then I believe that all other attempts will fail. Unlike the JLA, or X-Men, Avengers, or many other super teams, the Titans need to be together and commited to each other to work. That is why the chemistry worked before. Dick wasn't even in the Bat Books, nor were the sidekicks in the titles of their mentors. That is why their relationships were able to develop. There were no concerns about other titles being the major.
When Donna had to answer to Wonder Woman's editorial and Dick to batman, and Gar to Aquaman, then they couldn't develop except superficially. Priorities need to be stated, and if it isn't titans, then so be it. They are great characters, and do well on their own or with others.