My wife and I saw this last night, and while JP is deserving of an oscar for this, we did find this too realistic for a DC movie. Mental health issues are real, and the way this Joker is depicted is like nothing else we've ever seen in any DC or Marvel universe. I'm not sure what direction DC is going in and why?
Put it this way, after watching a movie, we always decide, "is it a keeper" in other words do we buy this for repeat viewing. And we both said "no". We have no desire to see it again, and I don't have any need for any Hot Toys variant (if any get made at all)
And this I believe is DC's problem.
For a DC/Marvel movie, this is as real as it gets. For me, I go to the movies to escape, and while Jokers environment is pure fantasy, his personal battle with demons is very disturbing.
Overall 7/10 for me, I've seen it, kept me enthralled, but not usually my type of movie.