As a tmux/vim user those extra control keys look amazing, there are too many layers fighting over too many control keys in my current setup, I'd love to have so

As a tmux/vim user those extra control keys look amazing, there are too many layers fighting over too many control keys in my current setup, I'd love to have something like a dedicated vim accelerator, a dedicated tmux one, a dedicated console one and a dedicated desktop manager one. Is anyone selling keyboards like this? What happened to those really expensive customizable keyboards from a few years back?