I want a custom mechanical keyboard for a modern USB-C/bluetooth system that's designed like this. Complete with the dials and gauges up top, that have to actually work. https://mastodon.social/@keyboards/112234070586039169
Also, i've seen similar systems* used in modular recording desks, that were designed to control a wider range of external machinery, so maybe the question should be "What do you want them to do?" :D
*They were the quiet keyboards, not the full clacky's. :D