Few ideas about improvements:

1) Giving number in plain language has drawbacks, e.g. you should translate them to a language users knows and they’re slow to pronounce. The way used by many antenna tunning devices is much batter and pretty intuitive – use a clear tone and change it’s level to indicate RSSI. Tone level may be changed instantly and this gives much better response and you don’t need to know any language to understand it

2) You may add “interrupt keys” to the script to be able interrupt this loooong preamble and skip right to the test. So if you’re installing 10th MP you don’t have to listen introductions 10th time.

This are just thoughts based on this video, sorry if they’re already discussed at mailing list. I’m failing to keep up with it