Adding a segment: the middle vertical bar

My first idea for a segment to add is the middle vertical bar. This will not be split in two, but instead will be the whole length. This makes some letters better (B, D, |) and other characters possible ($, +, T, M, W, w, m, x, X). As you can see, there is still a lot of room for improvement.

7 segment font

I've been playing with fonts for a while, and I've always wondered about the least number of bits that is needed to display a character set. One option is to use a 7 segment display, as shown in this picture. Sadly, it doesn't handle all characters, and a lot of them are messed up. On wikipedia there is a 14 segment display, which does handle most characters correctly, but 14 bits seems a bit excessive. I'll see if I can find some alternatives that use less segments, but still produce acceptable results. If you have ideas, please let me know.