Also, there is more development between Joker and Harley here, some added scenes and extended scenes that give you more info about their crazy relationship. Jared Leto's joker on this re-watch still is 50/50 for me. His performance varies so much from scene to scene. In some moments, I actually like what I'm seeing, but then it shifts and cranks up the cringe level and I'm like "NOPE.". So overall, he still doesn't work for me. And those hoping for tons of new joker footage, yeah, that didn't happen.
The movie is still choppy, poorly edited and paced. The characters that didn't get enough screen time are still mostly like that. There are still areas where you could feel something was cut, and that shouldn't happen if you are releasing an extended cut. WB definitely dun goofed.
So my take is, if you didn't like the film, this won't change your mind to a great degree but I would suggest to give it a try, you never know right. However, If you liked it in the first place, then the additions will definitely please you.
I gave the theatrical release a 6/10, so if I were to rate this, it will probably be something like 6.5/10. Still doesn't make it good OVERALL for me, which TBH, I was expecting. 12-13 mins of added footage wasn't gonna fix all the mess.