i like how the balls really parallel the character design & personalities of the characters - the scout's balls jiggle fast and his "hard meter" goes faster because he is hyperactive and gets excited easily but the sniper's balls are slower to jiggle as he does not run a lot and his "hard meter" takes longer to fill (possibly foreshadowing a sad backstory) but he makes up with a bigger overall size, just like how he is less active but more skilled.