Well, I didn't hate it and was actually pleasantly surprised by some parts of it. I liked Kristen Wiig's character from what we saw of her here and I also liked the new Ecto 1. I'd seen it before from pictures taken on set but seeing it driving around the,e it looked kinda cool.
I also liked the design of the ghosts, and the design of Slimer, who you briefly see in the trailer. There were a couple of bits I didn't like though:
Yeah I didn't care for this part at all. I really hope Leslie Jones character isn't the stereotypical sassy woman who'll shout "aww hell no!" when things get bad.
Also this part seemed a little cringe worthy to me.
Edit- Just watched the trailer again and she does actually say "aw hell no"...god dammit.