[TASK] NPS improvements

[trechriron]

Summary

Find owner to rewrite NPS questions.
Find ongoing owner for best approach to collecting NPS scores.

Details

From @sarahmills;

but my suggestion is for us to have a quick workshop with data (Spencer or Jo) and Rei, and a technical partner if possible to nail down what we're really trying to measure or track an indicator for, and what's possible for us to measure.

Additional Information

(sample of refined questions) https://docs.google.com/presentation/d/1ybVw7OeTzi0dsPZRR0WSnvyuXiWDee9RiL1fmxVpgIo/edit#slide=id.g29401eb30bc_0_244

[trechriron]

@vikpande - please add previous survey questions.