Interesting article on the Beeb about fans having input into tactical decisions at Avant Garde Caennaise. https://www.bbc.com/sport/football/46309834 The results have certainly been good thus far, although it the article caveats that the level of statistical analysis the club has access to is far beyond what you'd usually get at that level of football. It's difficult to know whether that or the fans taking part is the bigger driver of success. Still, after the success of AFC Wimbledon as a fan-founded club, it would be interesting to see a club in the English leagues try this as an iteration.