Thank you for such an interesting post.
The dry cabinets are amazing. But having more than 50+ cameras of all kinds and sorts I don't have place for it (and the missus would not allow it). But from my sad experiece, avoid, yes a-v-o-i-d velvet-lined leather combination bags as this has killed my M6 zinc top plate. The parts in contact with the velvet develped those nasty blisters.
Other cameras left in the cardboard boxes they came in, for years, waiting in line to be restored or repaired, still look and feel as good as when they arrived.
Plastic bags or cases with silica also work very well.
Best regards