Even when MTL does the SHPX three-dome car, and even if they do a multi-pack, how many will they sell? When is the last time they did a five- or six-pack of anything, let alone tank cars? When is the last time they did a multi-pack of a black tank car? UTLX, when it came out 30 years ago. How many times have they run that 10k gallon single dome car in the last 30 years, which is one of the most ubiquitous schemes on tanks of the mid 20th century? The initial five-pack in 1980, a six-pack in 1988, a two-pack in 1998, and a single release in 2002. Nothing since. If the demand was there, that car would be pumped out at least bi-annually and in multiple numbers.
IMRC still has kits available of four black nondescript tanks, even though the tool broke a while back. The 8k gallon single dome is a common tank for the transition era, and yet they still have stock.
We all want to see new models, which increases the diversity of what's available. But any model must have wide-enough appeal or it isn't practical to do. If black ubiquitous transition-era tanks aren't moving today, it makes little sense to introduce another one.
