You must ward 1000 time before you can play rank.

Please, add an other requirement where players must place at the very least 1000 wards before they can hop into ranking games. Placing at the very least 20 wards per games should give a bonus XP at the end of the game. After that, if they play a single game without placing 1 ward or without using the trinket item atleast once(sweapin lens or something else), they lose the right to play rank. They must place 1 ward in normal game to be granted access to play ranking games again.
Ranking game is serious business and low elo games are all ruined based on the fact that the majority of players or all of them don't do basic shit like warding. Some players are good, but they still never ward as if it don't exist. Yet, when you ward for them as a support or jungler, they become aware that the enemies are around so they should know that a ward is very effective. Yet, they don't ward.
Most players in low elo think ward items sush as sightstone is a waste of a slot. So as a support, they don't purchase them even if they are included in their recommended build.
