Why not put handicap stat to avoid pick like LuLu ADC, Leona AP etc...
To avoid pick like LuLu Adc, Leona AP or another broken weird combination, why not put handicap (like -25%) stat on champion?
Leona ap ( https://www.youtube.com/watch?v=KFD2weyPr7g&fbclid=IwAR2FJmsWqfbx3O8CDWCE4dTNe-Tz6tcwb-rY7GEneLQ_X1_zlnIDAsUU3Kc )
Leona is a tank, put handicap stat on AP. Total AP - 25%.
I think if you but handicap stat, the game will be more easy to balance. Tank champion will be tank, AD champion will be AD champion, AP champion will be AP champion.