Show the invocation name, intent, slot, in Test Simulator
Pre-fill the utterance text input with the invocation launch such as "open cat facts". Users often jump straight to their intent, and many type "Alexa, " as well; this may steer them into the right usage pattern.
Above the Skill I/O panel on the right, display in bold font, the name of the Intent and any Slots that were heard. It is difficult to scroll down the big block of JSON input and hunt for these after every utterance. This would create a faster feedback loop as developers test various utterances.