I see many layouts with a heck of a lot of modellers licence as it is. In reality how many modellers are both or either era or locaility based these days? So if a model comes out that takes the individuals fancy & especially if the price is right they will buy it, besides the manufacturer is the one wearing the affect of whether or not it sells.The VR Y is a very different beast to the NSWGR 41. Yes they were both mainly used for shunting and trip work, but the Y was very reliable, built in much larger numbers, worked all over the state and did see mainline service particularly during the grain season where it was MU'ed with other mainline and branchline locos.Ugly looking loco, basically only two liveries, limited areas of operation only - ie shunting and local trip trains.You could be describing the VR Y class which sold successfully as an HO model.
The Y was popular and a big seller because almost any VR based layout could legitimately have one or two on their layout.
The 41 was basically confined to Sydney so to have one on a country layout requires a lot of modelers licence.
All the best to Austrains but this is one that will not sell in big numbers.
I was talking to a particular manufacturer recently about loco sales & his plans for the future & was very much amazed at what he was considering for models coming from the far left field, I just hope they have money to invest & have a long wait for a break even.