I hope that 3-rail manufacturers continue making locomotives that can be operated with conventional transformer AC track voltage control. For small or simple layouts such as mine, the modern systems are not necessary and, in my opinion, not worth their trouble or expense. And, as with the DCS remote (according to TURBGINE), they will eventually be replaced by some new system that makes my beautiful but older equipment obsolete. At that point, the new products will have to run conventionally or I won't be a buyer, but I don't think the manufacturers will care or regard me as their target market.
MELGAR