What is the #1 missing product

[nachoman]

I remember back in the late 1980s - the HO people wanted 1) good looking and running plastic steam. Then the Bachmann Spectrum 2-8-0 came out. They also wanted enclosed auto racks, and eventually those came out. Also missing was a decent F40-PH. The latter two were almost a necessity for those wanting to model a contemporary (at the time) class 1 railroad. I think to be a #1 missing product, it needs to be something that is crucial for modeling a particular era, something that isn't easily kitbashed or a reasonable stand-in isn't available, and the era it is needed for needs to have reasonable interest. Sure, there is a lot that is needed for modeling 1860, but frankly there aren't many people interested in that era. However, I think many people would be interested in 1890-1910 if more was available. I can't think of anything that is missing from the transition era that makes modeling that era difficult.