I mean, i like both Harleys, but at least for me they feel to generic, i always said that Harley need something, but now the new Harley lack that thing that the old Harley used to have.
Also i think the new costume makes Harley look like thet Sith Girls from the Clone Wars.
The only thing i could say i hate about the new costume, is the fact she is so damn white, i think at this point she is whitter that the Joker.
I also i hope that DC dont try to make the two Harley thing i read in another website.
Also i post like 7 months before of the reboot a casting choice for the Suicide Squad and i said Harley neeed to be in the movie, what means i knew Harley was going to be a member.