Input combinations that trigger specific actions could appear in the form of gestures or even as part of a visual language. Think about how games teach you to subconsciously perform such actions using techniques like pacing and repetition to help engrain them in the user’s intuition.
I hear this a lot: “email feedback sucks; phone? IRL?”, but I think that’s a cop out. I believe we can have productive conversations through written words. Here are some of the things I think about when I send feedback over email.