Just wanted to say the whole project is really promising. I would really want to help with this project, but i think i could not commit myself enough because of all the other things i am working on at the moment. So i will just give suggestions for now and maybe i can help you guys later on.
First advice is, you guys really need one central site to work on and try to get more organised. This will work for now, but as the project will grow, and it will, you will need some storage space people can work with.
For the looks of the project, yeah, i really like it. It has this new feel over it and i think it can really have its place between all other sci-fi genres. The only thing that concerns me is the alien race that looks kind of mechanical. Somehow, it looks a bit less realistic than all the other artwork done up to this point. I understand how hard it is to come up with something that works within a concept, so keep brainstorming on it.
Maybe it would be smart to make a trailer or pilot to define a feel for the series and get some more feedback from people to refine the concept. You would not need massive amounts of modelling and texture work yet and might be 5 - 10 minutes. This way you might be able to attract funding and more interested people.
About the concepts, concept scetches are really good. Modeling looks solid up to this point. So as long as you guys stick with it and create a solid point to work towards this whole thing could really get on tv.
Keep working on it and i hope to see it on cable some time, hehe 