It would be awesome to be able to control Goodnotes on the Mac using VIM style keyboard bindings.
Not all VIM functionality has to be included, but some essential keyboard bindings that many people are already used to would create an awesome user experience for vim users.
Examples:
j / k to scroll down/up (and h/l for left/right)
ctrl-d /ctrl-u for page down/page up
/ for searching
gg to go to the top of the document
G to go to the bottom of the document
:4 to go to page 4
and so on.