Hopefully we'll see both innovations in tube manufacturing which will create new tubes with improved quality over nos, and increased production capability.
Redesigning what? Tube topology? What makes NOS tubes desirable is their sonic character and durability compared to modern production contributed by used materials used back then. Nowdays most of these materials are health hazardous.
Still you need new plants and raw material, back to square one.
Old tube factories are sold or dismantled, ROI would be low.
As for NOS how many hands to switch before dead if not already.
My friends every year old production tubes availability is dropping drastically and only hope for users to benefit is a min demand.
Anyway procurement was not great, for new tubes, but during this time nothing is.
