i think i would be a cool idea to have a large British or Australian Beyer Garrett locomotive for those who like powerful trains but don' t want to run big american trains or have to double head multiple locomotives.
it definitely would be. id love to run it in the outback across vast open plains. it would look so cool
These are the only Garretts I've ever seen. https://members.uktrainsim.com/filelib-info.php?form_fileid=38494
A standard gauge Garrett comes with the MSTS Conversion Pack: http://railworksamerica.com/forum/viewtopic.php?f=30&t=20312 but of course the model is at least 10 years old and doesn't look great.