Opening thoughts? Well, my first and BIGGEST one, is that this project will slowly lose popularity until only a handful of loyal forums users will use it at times when they can remember. That's just what I think might happen.
Other than that, I think that Aethasians are English. British actually. Why are you bothering with making another language? Do you mean writing? Either way, SCS might already have a language/writing in mind since they already used it a couple of times. So, if anything, start with that. Base your alphabet off what you already know.
Something off the top of your head is going to be forgotten or too hard to develop. People who you hire as "language experts" are kids. Not professionals. So if you want to do this, you'd better prepare to be pretty frustrated. That's just my opinion, and I'll help if I can.
What? Not quite the answer you were looking for?