Yeah, Damian is doing REALLY well for himself these days, and that's good for everyone. TT, Super Sons, Nightwing guest spots, it's all great stuff.
Darkseidpwns and I have talked about ways to get the most Batfam in the fewest books, and a new version of it I've thought up is:
Batman: Batman. I wouldn't read it, but I know a LOT of people really want solo Batman adventures. Plus, Duke and Claire could be here sometimes if writers actually want to use them.
'Tec: Batwoman alone leading a PERMANENT team of Hawkfire, Azrael, Batwing, and Clayface, dealing with crime around the world.
Nightwing: Starring Dick obviously, with Huntress as a supporting character.
Red Hood and the Outlaws: Exactly what it is now.
Batgirl: F**k this book, but we're not getting rid of Babsgirl.
90's Batkid Book: Any of the 3 could be the lead, with the other 2 working perfectly as their main support. Put them in a college setting and it'd be something unique to them.
Damian is fine where he is now outside the main Batline.