Another David! ;-)
Thanks for your comment, apart from the alien classes, other things are mainly prototypes that could be changed or made better if people say they are not well made.
For exemple the node is a problem as you can't make the blue "holograms" on it. Instead of letting the node an assembly of 3 simple blue plates, I added some glasses as you can see on one picture, I didn't know if you would like it, and... actually I still don't know... x)
Do I have to change something? What do you think about the node, bsuit, etc? I'm not sure if I made them very well. (Especially those 2...)
LEGO does not always suit good for making things, but that's not a reason to not trying to do things that looks like they were real.
I also tried to work with proportions as best as I could, I think I did it correct, not perfect but not awfully bad, what do you think about it?