Maybe rewatch an episode or 2 to help you decide? I would honestly recommend getting them if you're a fan of TNBA. Even though I don't like most of the revamp designs as much as the old designs, I think the TNBA characters have been translating a bit better into figure form. There really aren't a ton of characters left for TNBA that I can think of, so I can see Superman start taking TNBA place once they run out of characters for it.
For TNBA all I can think of that's left is:
Mad Hatter
Riddler (I hate this goofy ass looking riddler, but I guess it's better than that Marilyn Manson design from The Batman)
Penguin
Catwoman
Clayface (Possibly with "Annie")
Ventriloquist
Calendar Girl
The Judge
Alfred
Farmer Brown (Don't want)
Police and the Batfam in civilian clothes
And on the 18th Harley release they can say it was that fake Harley from Joker's Millions lolol