All right lads, I just watched it. Not nearly as good as I was hoping for, but a far cry from being as bad as the reviews would lead. Yea, it would be much better if they'd just let it be R-rated, but all in all it wasn't terrible.
Margot Robbie as Harley was awesome, honestly, I think she captured the character perfectly. Will Smith as Deadshot was pretty good. The El Diablo character is much better than I expected. Captain Boomerang basically should've been left out of the movie. Jared Leto as Joker has potential BUT they only gave him about 10 minutes of total screen time, so there's no telling how good he actually is.
In other words, wait until they release the inevitable extended version if you want to see Joker (it'll probably be better overall too), but if you just want to watch the rest of them go, then it's not a bad experience. Solid 7.5/10, in my opinion.