Meh...
I can't summon enough energy to be positive or negative about this. If folks like it, then good for them. If they don't, then that's okay too.
Frankly, I don't give a rip about the DC movieverse, and this did nothing to change that. Simply put, these movies weren't made for me, so I'm not going to get all bent out of shape over stuff like Harley and the Joker being nothing like their definitive DCAU iterations. I already got nearly fifteen years' worth of the good stuff, and I'm fine sticking with that.
Play me out, Harley.