Back again for a suggestion. I love to read some photo magazines and there is moments they celebrate the square format. They give us "do it yourself" to previsualize a picture that we'll crop to a square.
So, maybe another option for the liveview to show only a square of the image and the cerise on the gateau the ability to save the square picture ? Maybe I don't explain it so well but you can ask me if you don't. I'll try tp do test, screenshot and final picture to show you that :)
Best regards,
Billy