+1 for "just" changing the rules or ball or whatever to improve (or at least test) game dynamics for greater balance and (presumably) interest. My personal int

+1 for "just" changing the rules or ball or whatever to improve (or at least test) game dynamics for greater balance and (presumably) interest. My personal interest is for soccer to allow more substitutions to let coaches tweak the team more as the game is played. Small change; maybe big results in scoring.