Hey, you guys wanna do weird things to the ship, go ahead. I'll model it. Like, glass domes or rearranging the wings or whatever, seriously... That's why I built it with crazy customization potential in the first place!
Go ahead and do stuff which isn't on the list, even!
The only proviso is that you gotta do it in thread, and the characters should actually be able to trade for the new parts and stuff. No inventing a hyper laser death cannon, unless you're friends with a hyper laser death cannon guy.
The parts you got as a reward were just stock parts, because you saved the asteroid full of stock parts...
Edit; Oh, and I probably will re-model the Porter at some point. I just don't think that Nashoba is going to have the original 3D model from 7+ years ago, somehow.