I find the new Joker to be a bit of a try-hard. I mean, sure, the Joker has spent plenty of time in jail (which would account for the crazy amount of tats), but his shoot isn't even vaguely "disturbing" to me.
Let's not forget that he once ordered someone to cut off his face so he could staple it back on.
I'm not sure if any of you remember the "mechanic suit" he wore when he needed to get back to business... "Hi, My Name is Joe," the nametag said, and he carried plenty of 'tools' with him, his face barely stapled back into position. That, is what I would believe, is actually disturbing.
(Pretty much beat Jason Todd almost to death with a crowbar, left him for dead in a warehouse that went 'splodey.)
So this new take on Joker (I heard that he's not actually going to have all the tats in the final film, which I believe is a good thing), while it may seem "super psychopath," I'm waiting for the finale. Ledger put a different-enough twist on Joker (I still think Nicholson did the best), and Leto's seems to be... well.. unrefined. The Joker is all about how it only takes a single bad day to change the sanest man alive into absolute lunacy.
"Just. One. Bad. Day."
https://superherosdouble.files.wordpress.com/2013/12/joker-joe.jpg
http://fc06.deviantart.net/fs71/f/2014/082/3/4/joker_mechanic_by_robbiebelike-d7bex2o.png
(last but definitely not least)
http://static.comicvine.com/uploads/screen_kubrick/0/40/2878100-jokerlove_640.jpg