We would like to be able to edit/change the keyboard shortcuts in Confluence.

Keyboard shortcut for adding bullets and numbers are causing trouble. They are supposed to follow the standard for google-docs: ⌘+Shift+8 for bulleted lists and ⌘+Shift+7 for numbered lists. The standard for MS Word bulleted and numbered lists would also be acceptable. Making up your own shortcut keys would only be tolerated if you also provide a way to create new or edit the shortcut keys.

The source of the problem is the spec which is accurately represented in the documentation. To reproduce the issue you need only try ⌘+Shift+N with a modern browser (like Chrome) to see that this particular shortcut is useless (since that shortcut key is reserved for opening a new private browsing window).