You pointed out Nick as being an example of the lack of maxv development and consider myself a counter example of him, so it might be interesting to compare performances.
I have improved my max v a lot this year with a basic training routine, mostly 40m-60m grass sprints (and sometimes with a very slight downhill), cleans, lots of deeeeep squats, very little plyo, mostly posterior chain dominated lifts. Last year struggled to reach 10 m/s all out, this year can run it with bad mechanics and not forcing it.
Even though I increased my speed since april my 8 step approaches had remained the same, until winter forced me to do just plyos and lifting in the gym. Incorporated more anterior chain work. Two weeks after that I pb’d by a foot, one month later after dropping OL’s by another foot. Speed is now better than ever.
In comparison to Nick my strength sucks (either lifting or bounding), my accel also but the gap in max v consistency isn’t that big. The biggest difference is his [total] lack of hamstring development and that I can outperform him in hamstring localized lifts. While he destroys me with partial squatting (thus quad dominated), the gap in full squats is much smaller (“just” arround 20kg for full squats).
What I can get out of this is that anterior chain [quad] strength helps with jumping power, yet posterior chain controls absolute speed. Experimentation with cueing also helps, learning to get the right feelings is essential.