This is their best trailer so far, but the spitter ruins it (i also dislike the crusher). I think the spitter is actually pretty well desingned but still, the design doesn't fit Alien universe. Looks like they took the it's just a videogame mentality on the contrary to their authentic Aliens sequel/ Alien 3 prequel which Gearbox claim they are making. There are just too many facts about this game i think are suspect and would have looked ridiculous in the film. I wouldn't be so negative if this game was another fps with xenomorphs and marines in it. Im still sure this game will be a lot fun and probably will buy it and am glad it's being made.
That said, i think the spitter (hate the name) would be kinda cool if the acid bags would be dark green almost body coloured while the xenomorph is not attacking. Glowing would commence as soon as player touches the attack button. Longer the button hold duration, deadlier the attack, predator shoulder cannon style. Quick push withalmost no glow and very weak attack, long push results instant kill. The way i see it spitters should be especially well camouflaged and when a marine sights ominous glow from the dark he has to react instantly or he's history.