Maybe someone has suggested it already but if not - can we please have an add-on for the BR class 55 Deltic. Would be a good seller no doubt about it ...
There's two versions already. A bit old, but in case you don't know Prototype: https://store.steampowered.com/app/222595/Train_Simulator_BR_DP1_Deltic_Loco_AddOn/ The Class 55 is part of the European Loco & Asset Pack (comes bundled with many DLC) https://store.steampowered.com/app/208300/Train_Simulator_European_Loco__Asset_Pack/
Mmm... Deltics.... The BR Blue Diesel pack also includes the (Class 55) Deltic: https://store.steampowered.com/app/325977/Train_Simulator_BR_Blue_Pack_Loco_AddOn/ I'm not aware of any differences between this and the model in the Euro/UK Locos and Assets Pack.
It's so old that it's really not very good. Hopefully when DTG tackle the Deltic for TSW there will be an improved cloned version for TS too.
FYI this is the Train Simulator Classic section of the forum, which is a different game available only for PC. There is a separate section for TSW2 and any suggestions for it should go there.