Maybe you should try to find some collaboration on http://www.train-fever.net , they are modding like crazy, they actually already got some train mods running in TF beta.
It’s a german community site though you could just start a english topic, see what the reactions are.
Hope to see the american mod pack aswell, the more mods, the better. I personally hope to see a dutch trainset, but all the others are just as welcome!! 😀