I am a big fan of some of the more rare and interesting diesel locomotives. I think they need a few for TS2018. Here are my ideas: Fairbanks-Morse H-24-66 Trainmasters: SP (Black Widow or Bloody Nose liveries), PRR FM Erie-Built A/B units: (PRR, UP, ATSF) FM C-Liners: NH CPA24-5; PRR CFA15-4/CFB15-4 SP/D&RGW Krauss-Maffei ML-4000 Diesel-Hydraulics Utah Railway Morrison-Knudsen MK5000C/MK50-3 (for D&RGW Soldier Summit)