Someone shared this idea before but it looks like the topic was “automatically closed after 30 days”.
In regard to the key/gamepad prototyping trigger - currently you have to specify a specific key to be pressed to trigger the interaction. So the person who makes the prototype knows what keys to press but if someone else is testing the prototype they have no idea. It would be nice if there was an “any key” option. That way, whoever is using the prototype can start pressing keys on the keyboard and the interaction can be more discoverable.