Live view option to auto rotate for canon (and others) to match camera orientation please

What problem do you see this solving?

Having to drop down a menu to select the right orientation is a pain and way too clunky for a busy shoot.. at the very least there should a quick select or hot keys.

When was the last time you were affected by this lack of functionality, or specific tool?

Everytime I need to swap to shooting in portrait and back - everyday basically.