This. I mean, fuck, it's either the greatest thing I've ever watched or the most lolrandum shitty one. I can't decide. And all dat Harley fanservice. All those Batman facial expressions.
I'm giving it major points for not making Nightwing a chump for maybe the first time in a DC movie. Also for the blatent naughty bits to earn it's (I assume) R rating, and being clearly for those of us who grew up with the DCAU and BTAS, going out of it's way to fit into the canon without stating it is.
(I mean, is Batman allowed to be so cheerful after Tim got tortured to madness? Yet, right down to the vehicles, Dick's mullet being mentioned, the Joker being 'gone' even if they never give the context, Harley retired, ect)