I like to see the creatures showing what they are capable of, without the gory its just weird. Something I liked about the games was what the mess you could make with the bodies of your enemies.
The Alien/Predator gore on AVP was quite good, it wouldn't have been the same if it was that blood didn't show up. But the human gore was missing, the chestburst scenes felt weird without it.
AVPR fixed that aspect but it wasn't enough to cover the other issues. But still it wasn't as gore was some games. For me its more about the kills than the gore itself, just repeating the same headbite or plasma shot gets boring, in the games you could see the creatures being more creative.