And also slightly misplaced. I wasn't really thinking about trying to make not-alien-aliens. I have my own sandbox universe and love the Heresy Lurker heads. So I thought I would try them and the work. I also have traditional genestealers, and I have also placed these heads upon Hormagant bodies which work equally as well.
However, on the day, these will not be used. The plan is to use HF Mawes, but I am not painting those up and as I will continue to playtest ideas etc for a little while as well as shoot photo's of the terrain I figured I would include them as they are what I will be using for my game.
Also, I am very aware of the dawn of the lead blog, it's by a guy who will be at Salute helping us run games on the three tables we'll have!

Did you borrow the xenomorph deck idea from Zombicide? I like your "blip system" concept. Definitely would try that for a similar style of game. Excited to see this come together. 
I've never played Zombicide! It's more loosely based around the sort of concepts you see in things like Space Crusade or Warhammer Quest where you turn over 'encounter' type cards when you enter a room etc. We had discussed ways in which to do this without having to instantly flood a table with a million xeno's and also help maintain that 'threat' atmosphere. This seemed to be the most simple way of doing it.