> If you see a character, you should just be able to type it.

How should we do this?

I am imagining that we have a "char-bank" that lives on a little touch display at the left of my keyboard. I can add chars to my bank by highlighting them and pressing a 'yank' key. I can scroll up and down through my charbank and type the chars with a tap or rearrange them with touch-and-hold similarly to apps on a phone's homepage.

If I want to map a char to my keyboard, I can press and hold a "map" key, tap the char, and press the key I want to map it to. If I want to map the char directly from the screen I highlight it and press the map and yank keys together.