I've requested this a few times...maybe just in the wrong spot. So I'm going to try here where the devs are more likely to see: Please add numbers to the keyboard shortcut option list.
I love to follow an authors logic by numbering coordinate points. If an author is making a 6 point argument over a few pages, it is helpful look for each one of those examples and visually identify them. I have found my numbering markup to be incredibly helpful for this, but it would be even more helpful if I could use the numbers on my keyboard as keyboard shortcuts to access the markups. Currently only the letters are available as shortcut keys.

You can even include my numbering markups for other people to use as well. They have proven very helpful.