Feature Freight Car Subbing For Cjp, Smh, & Spg

This feature would substitute cars from owned DLCs and put them on Mixed Freight trains in Cajon Pass, Sherman Hill, & Sand Patch Grade.
This would make it so the Manifest trains are far more mixed than they are currently.
Also fixing the subbing for Oakvile would be good as it subs only certain cars the reefers don't get subbed in.
Also if you own Cane Creek & Sherman Hill I would like there to be a chance that the AC4400CW from that route can be subbed into Timetable Service the same can be said for the SD70ACE being subbed into Cane Creek as they are both seen on those lines
Sherman Hill sees the AC4400CW alot more though.
This is also a request to add the GP40-2, Steel Coils, & Trash Carrier Cars back into TSW5 as we were robbed of those 3 items when TSW2 came out. (Probably in a new DLC Pack for SPG becauseit was originally for SPG)
The Trash Carrier Cars would also add a new Timetable train to HSC (64V & 63V Trash Carrier Loads & Empties)
(And no the Amtrak SW1000R will not come back because Amtrak is a strict little you know what when it comes to licensing)

 

Oh and on HSC even though those Mixed Freights on that route aren't too bad

 

I would love this. Mixed Freights would become far more interesting and realistic if TSW decided to do this.