Harley of course would be the main draw for me, but like HH I knew that they were going in a direction that didn't overly interest me with her being hyper sexualized.  I like my Harley a bit more plausibly innocent in that respect... Not all hot pants and wet T-shirt.  The childish side of her becomes too creepy when she's dressed up like a stripper for us to leer at.

I understand that the reason that Leto's Joker role in the film has been so trimmed down is because the original cut of the film treated the Harley/Joker relationship as highly abusive, as it was in the cartoons and comics.  It didn't test well with audiences though, and so they re-cut it to make it seem like the Joker truly cared about Harley.  (One example being a scene where he pushes her out of a helicopter...  Originally it was apparently because he was peeved at her, but the new edit placed it right before the helicopter gets shot down, making it look like he saved her on purpose.)  I gather her arc was originally supposed to be her gaining some independence and choosing the Squad over him, but now the less-abusive version keeps them together in the end and almost seems like it's endorsing her relationship with her abuser because he really does care.  That's potentially all kinds of messed up.

But again, maybe it will play differently/better to me when I actually see it for myself.