Personally, I'm just a little disappointed with what appears to be Doomsday's design, but that's just a nitpick. Other than that, I think it's a pretty good trailer. I don't think it shows too much, because all it did was confirm what a lot of people already thought was going to happen: that Batman and Superman put aside their differences to fight Doomsday, created by Luthor, alongside Wonder Woman. We still don't know heaps of details, including the big one: the ending. 

So yeah. Good trailer.