If you may not of noticed Armstrong Powerhouse has enhancement packs for vanilla diesels in TS classic. Bellow is a typical 31 enhancement with dynamic exhaust effects which means the locomotive's exhaust effects are extremely close to it's real life counterpart. I haven't seen anything like this in TSW series yet but the release numbers have gone up the scale promising major features. I'm just suggesting maybe it's time to raise the bar in 6th installment had guarantee these effects on all diesels? see https://www.armstrongpowerhouse.com/enhancements/locomotive/class_31_enhancement_pack
WCML: Preston - Carsile does feature dynamic exhaust effects on their 101, 47 and the gronk. So there is hope overall that all diesels will be upgraded.
