I don't go to Predator or Alien movies for substance, either. So, the gore will be just fine for me. After all, aren't these movies about alien species that kill without pity?
I have nothing against gore, but I think it would be nice if there was a half-way decent story behind it. I'd like something was wasn't forgettable an hour after I saw it.
The first two Alien movies were so much more than just gore. There was story and atmosphere and characters you cared about. I couldn't tell you the single name of any character in the first AVP movie. I just didn't care. And it looks like this one will be the same way.
I'm not saying it's going to be bad, it just looks like it will be forgettable. I think the Alien and Predator franchises deserve more.