Loco Probably Comes Up A Lot But, Why's There No A4 Pacifics?

As per the title. Since the arrival of the Train Sim World games these locomotives are completely absent. Have DTG ever said why and are we likely to ever see them get added into the newer games?

 

Probably not likely as Steam is all buy dead as far as tsw is concerned, unfortunately

 

As I've said on some other threads, DTG have seemed to abandon Steam. I think it is a shame that such a large portion of the railway's history is being ignored