Programming speed: many ways lead to Rome

An article I produced for HIIT Science (Twitter: @HIITScience; Martin Bucheitt and Paul Laursen).

Check out their book, "The Science and Application of High-Intensity Interval Training"

This program was implemented only 18 months ago, but already there is so much I would change. Is there a more obvious way to see your growth as a coach - looking back on old programs and identifying things to improve on?

https://hiitscience.com/improving-speed-in-rugby-union-use-of-a-short-to-long-approach/

Thoughts welcome.