@doubt I considered implementing an inline footnote shortcut, but decided that it wouldn’t actually save any key presses.
Right now, to make and fill out an inline footnote you type: ^ + [ + footnote + ].
Out of that, 3 key presses ^ [ ] are for the footnote.
If I make an inline footnote shortcut, you would type: Shortcut Key 1 + Shortcut Key 2 + footnote + →.
The shortcut would make ^[], and place your cursor between the brackets like so: ^[|].
The shortcut would be at least 2 key presses (for example Ctrl + ^), and you will need to use → to move your cursor past ] to the end of the footnote after you’re finished typing, resulting in a minimum sum of 3 key presses. If you use a 3 key shortcut or more, the keypress number could be even worse.
As a result, there is no numerical benefit to an inline footnote shortcut.