Forgive me, I have not read this entire thread. But from what I gather this thread discusses the role of S&C in soccer.
The role of endurance vs Strength/Speed/Power. Strength and power training might not seem to be of benefit in a game that is 90 minutes long and has a great endurance component.
Consider the following: while a player may not be able to hold 100% pace while driving forward with the ball for long, he can train so that 100% is now his 85%. This player now has a greater speed reserve when playing. He now plays at a higher level for the entire game. Previously he could only play at 85% of his previous speed and capacity. Regardless of his endurance capacity before and after, he can maintain a higher pace for longer.
I liken any sport that has an intermittent ballistic requirement to the 400m. The more speed/Power you have the less sprinting down a court will take from you, the less a jump shot takes from your legs, ect… The difference between the 400m and these sports are that the 400m actually builds the lactic acid and thus the aerobic component is required.
Because no athlete can hold 100% of their sports intensity for the entire game, and so they typically play at a percentage of it. Endurance training will only raise the percentage of intensity you play at from 85 to 90%. But speed/power training keeps the percentage the same and raises the magnitude. So raise the magnitude instead of the percentage and you’ll out run and outjump others without breaking a sweat.