I certainly would ....other states as well

Which ones will you be working on ? May be I will avoid the ones you went after ( depends how well you do it ) but if its for Sydney, I plan to do everything for Sydney ( for my saved game compatibility, so I can release saved game with all mods from me optimized and features centralised ), if you plan to do Sydney ones as well, then I will have some release privately (of my own build from scratch) and let you release some publicly (of your own build).

Currently all my train mods are what I considered to be barebone, I will add extra features in one fell swoop to all my train mods in the near future... I consider color choice, aging, unique sounds to be barebone features.

You can tell how dedicated I am, I have been making something almost non-stop since the game was released covering many areas of mod creation ( from map, structure, vehicles, animations ). I was hoping someone with similar dedication to carry the baton onward, maintaining decent quality ! I might consider retiring if someone can make great things !