I think we outta take TSW5 to a new level. We can our own liveries, consists, and scenarios but why can't we pick out a different horn for our units. I personally think we should have the ability to have different horns on things like the SD40 or SD70ACe's (this wouldn't really work for foreign countries since I don't think they change their horns much). Now you might be think "how would this work?" Well I personally think either a whole new tab in the creators club area or in the livery editor, there will be a tab under exit/leave or above it with a list of all the horns that engine has ever used or a list of any horn of that country. This would add more choice for players and their fictional company's or whatever.