Yes, the Audio Technica nomenclature for identifying models isn't the simplest, that is one area where they could probably take a lesson from Sennheiser, Beyerdynamic or AKG.
On removable cables, it strikes me as odd that Audio Technica have never modified their older models as while I'm aware that modifying a design and production isn't as cheap and easy as some think, it would nevertheless be a pretty straightforward improvement and they have upgraded some of these designs in the past. I have zero interest in after market cables, no balanced, but if buying expensive headphones it is re-assuring to know that if you end up guillotining a cable or pulling it out it is simple and easy to replace by just buying a new one to plug in. They've adopted replaceable cables on newer models but they still offer a few models with fixed cables (although I suspect in some cases they are carrying remaining stock rather than manufacturing).
They seem to be abandoning the wing system, I'm split about that. On the one hand I think it is a sensible decision, on the other it is quite sad to see a different approach ditched by conforming to the norm.