Any interest in knives in 1/16” 440C?
Personally, that's too thin for anything above maybe the hurley creek or other very small knife, or an extreme slicer like a kitchen or caping knife. I would worry about toughness in outdoor use. Could make a wicked fillet/B&T knife (hurley creek again).
I think 3/32" could be pretty solid.
I'm trying to think of the super thin knives I've had, like an opinel, spyderco dragonfly, and chaparral, and they were great slicers but certainly light use knives (great for most EDC). I know the opinel carbons are supposed to be pretty darn tough, just not sure how that works out for a fixed blade for more uses. I think the opinel is the only one I've had right at the 1/16" thickness, which I like for that knife but I do have some concerns that it will wear away fast from sharpening. It's cheap, so less a concern, but on a custom knife I think I would be more of a consideration.
The big plus of a 1/16" blade, it's pretty hard to get it to be dull since it's already so thin. To be honest, this is purely speculation on my part and limited experience. I think it would interest me to try, and maybe I should spend more time with the opinel.
I do find that 2.5-3mm blades (I like the metric system) is my favorite spot for nearly any blade, 4-5mm for a harder use knife (camp knife, bk7 or bk9 for reference), and over 5mm for chopping or needing the ability to do non-knife tasks with a knife.