Thanks, Hawk.
Andrew, as Hawk stated, the only real incentive I can offer is your chance to have a design which you created used in a mod. I'm sure many people who post here do so to get their artwork out to the world, to an appreciative audience. Well, this is that on a larger scale; your opportunity to have your work seen by a whole lot of people (over 8,000 downloaded our first release); and not just once either. Your design isn't a pretty picture that people look at once, it's something that will actually be
used by people every time they play our game, and something which is so important in that it sets the tone for the immersive qualities of the game as a whole.
Beyond that, I can't really offer you any more incentive, other then perhaps a cookie or three. Bringing money into an open source mod project is a bad, bad idea; not only because I have none (

) and everyone working on this project is doing so out of their own free time, for their own benefit, but also because involving money brings a sense of expectation; like something "paid" should therefore be "earnt".
Anyway, the first few sketches have rolled in over at the Spring forums. Nothing flash, just some early ideas which people have thrown onto paper to show what they're thinking and get some ideas/criticisms from other people.
I
really encourage you guys to do the same, it gets people talking, it gets ideas out in the open, and it benefits everyone.
From user 1v0ry_k1ng
http://img109.imageshack.us/img109/9600/atmcgh8.jpg
his concept is that the building uses the legs to absorb the impact of the shock when it lands.
From TheRegisteredOne
http://www.fileuniverse.com/images/T...nter%20WIP.GIF
A pretty solid WIP, you can clearly see where he is going, and the C&C influences.
EDIT:
Another one just came in, from user AF:
http://img471.imageshack.us/img471/8043/swdesignyt3.png
This design is grappling well with the concept of being 'dropped down' and 'prefabricated'; though a little more focus on the structure itself is still needed (it is a preliminary sketch).