I'd like to suggest two features for using keyboard shortcuts for navigation:
Make keyboard shortcuts work even if I have an input selected. E.g. if I'm in edit mode and I'm typing something into a text input component and press CMD+J, Retool should open the bottom panel.
Add a new shortcut: CMD+Shift+J, that maximizes the bottom panel height.
Seeing this functions would definitely speed up my development and I hope for others as well