Why do American monsters always end up...
...looking and sounding like the Cloverfield monster? I'm sort of riffing on James Rolfe's comments in response to Godzilla (2014): https://www.youtube.com/watch?v=dASbZcZ8ePE&feature=youtu.be&t=224
This isn't a problem with the movie so much as it is me wishing that American films would push the envelope just a little more when it comes to creativity. I want to, someday, witness the birth of a new unique and memorable monster in Hollywood at the level of Giger's Xenomorph or Toho's Gigan. I've grown tired of the same gray, bendy-legged, velociraptor-sounding monsters of what feels like the last two decades.
Granted, the gimmick with them being blind with super-sensitive hearing was pretty cool (a gimmick also used in The Descent (2005)). But if I were to design a monster for this story, it would be something more catlike (but still with a unique twist to separate them from our familiar cats) and stealthy - the thinking being that cats, too, have sensitive hearing and prowl around silently so they can hear their prey. Something like this with no eyes and more exaggerated ears:
http://static1.squarespace.com/static/52821880e4b0213a9156e803/52a8a46be4b0a56a2d8b919e/52a8a46ee4b02085b01a174b/1386783863303/monsterCat_CC.jpg