We already have the CN Oakville Sub route as preserve collection coming for TSW2. You guys should seriously consider making these new upcoming heritage units for CN, as there are 3 now made, GTW, BCRail, and Illinois Central.
Now just waiting on BNSF and CSX to have a heritage fleet (I have heard a rumor that CSX has a heritage fleet in planning and might be released within the next couple years. Shhh, don't tell anyone )