Judging by the reaction of the people that wrote those negative reviews the studio might have actually done things well this time.
Not really a fan of DC, Batman, super heroes in general, but I always thought the Joker was an interesting villain and as it was shown with Ledger's version even if you recreate the character with an alternative version it can still work. They seem to trying to put that type of effort into the character again, instead of the waste that he was on Suicide Squad. Heck I might be wrong and they might screw up the character, but I'm willing to risk my money and go watch on the theater, something that I haven't been willing to do with other series.