This was probably the best ending they've given to their three-parters, but it's not without its issues. It's somewhat rushed, of course, but there's something else that bugged me too, which I'll get to later.
spoilers:end of spoilers
The reveal that Ra's al Ghul is the mastermind that's controlling the Court of Owls' Talons isn't too surprising (though I was sure he was the head Talon). It's not the first time these factions have been linked and they even acknowledged the similarities between Hamilton Hill's new lease on life and the Lazarus Pit. The role of the Gaia Grain felt like classic Ra's and I appreciated that Poison Ivy made the connection. Ra's has a gory send-off that seems like it could lead to his body swap with Talia. Or not. But Gotham's villains would certainly consider this event a Near Apocalypse.
Speaking of, using the imprisoned villains like that was a neat way to make the issue more of a send-off to the series as a whole. While some are just static cameos (Kite Man, Calendar Girl, Clock King, Straightman, Roxy Rocket), most of the villains that have been featured in the comic get some dialogue and fight scenes. The highlights for me where Penguin and Esther Valestra, Killer Croc and Clayface, and Scarecrow. It made me wish the last villain had a more prominent story. Langstrom also helped by turning into Man-Bat, but he otherwise was pretty useless. It's not like they were setting up a more heroic Man-Bat or anything, so that whole part left me confused.
One aspect I enjoyed in this arc was Catwoman and Talia's interactions. Again, the comic explores something new to the DCAU and I liked that even while they're bickering, it's not over Batman. Robin has some amusing bits making fun of them, and even he gets humbled by the end.
My biggest issue is the final note the comic ends on, where Robin points out Ra's tried to persuade Batman by using his lack of family against them. Batman rightfully points out he has a family and he didn't want to ruin his relationship with them. Yet, we only saw Barbara briefly in this arc and Dick has been absent this entire season. I feel this story warranted a full Bat-Family team-up more than season two's Mayor Mayhem arc. Their absence undermines the ending's sentiment, which is a huge shame.
Overall, I felt season three was the strongest of the comic's seasons. While I was glad to revisit B:TAS with some of the talent behind it (and its tie-in comic), and there were some fun stories, art, and dialogue, I'm surprised that this series doesn't rank that high in my list of recent tie-in and continuation comics. It makes sense that it ended since the toy it was tying into has long been cancelled, but I wouldn't be surprised if DC changed its mind later. Alan Burnett teased that he and Paul Dini are working on something. Maybe it's a different project, maybe it's that Jason Todd/Deathstroke story they wanted to do. I guess we'll see.
spoilers:end of spoilers
Dini or Burnett mentioned in the past they wanted to save that story fr either a one-shot issue or a graphic novel. Nothing's been confirmed, but I wouldn't be surprised if this was happening.