Just like stated in the title, I would like to see all loco/wagons DLC’s will be brought to the same level or see some sort of upgrades, wether it be the audio (like the good audio of the Vectron) or switches (like you still can’t use P/G/R switch on the German BR101 and autorack cars)
That would be a ton of work. Some of the older content in particular like the 1442 from rt requires a rebuild from the ground up to have newer sounds. The amount of work required makes it unlikely to happen. Upgrading dostos requires a physics overhaul that isn't as simple as just include a button. The 146 in msb needs to be remade which the dra version had to do. If it was that simple we would see it by now. It takes time, resources and an entire separate team to upgrade everything to the most recent