I'm aware that there are different sets of special characters for different languages, and that some have a menu system (such as the Japanese input).<p>What would you like to be commonplace on most people's keyboards?<p>I'll start with ≈.
Are you familiar with compose key sequences? This is a way of extending the set of characters that can be directly typed by having predefined sequences of keys that map to particular characters. They are started after pressing a so called "compose key". There are some examples in this article:<p><a href="https://en.wikipedia.org/wiki/Compose_key" rel="nofollow">https://en.wikipedia.org/wiki/Compose_key</a>
To me, it's interesting how Apple's Touch Bar on the keyboard often gets criticism from technically oriented people, yet in theory it appears to solve the needs of everybody here: just figure out a way to program your desired key into one of the spaces and you have anything you need.<p>I've never bought one of those machines, so I have to ask, what was the problem with it? Was the issue just not having tactile feedback? In pictures, it appears nice looking at least.
Lately I've felt stuck in Dvorak copy/paste hell, where Ctrl+C/Ctrl+V are two-handed or right-handed operations, while using the mouse. I'd want some kind of keys on the left side of the keyboard for that purpose (even insert, for shift+insert or ctrl+insert).
I suppose a section of the keyboard could be designated for use as a scientific calculator?<p><a href="https://i.stack.imgur.com/AMWZj.png" rel="nofollow">https://i.stack.imgur.com/AMWZj.png</a>