Actually, you can see, everyone buys wards, everywhere are wards and nobody can gank because of wards. This makes most junglers useless. Also, they make the game very passive because you can just sit in your lane and farm without any chanche to beeing ganked. And you don't have to look everytime at Baron or Dragon because you have a ward there. So here is my suggestion for putting wards into the right place:
Effect: Places an invisible ward with 1000 range. Lasts 35 seconds, Max: 5 Stacks. No longer grants gold upon beeing destroyed .
Effect: 30 Armor, 23 Attack Damage, 15 Life Steal.
UNIQUE Passive: 20% chance on attack to deal 425 magic damage to a minion/monster.
UNIQUE Active: Places a sight ward with 600 cast range. 3 minute cooldown.
Scout (Deprecated template: use Mi1 to Mi6.):
Increase vision range of wards by 10%. Also increases duration of wards by 10 seconds.
Effect: Covers an area of 1000 with stealth-detecting mist, granting vision of units. Lasts 15 seconds, Max: 5 stacks (unaffected by Scout (Deprecated template: use Mi1 to Mi6.))
is now avaiable at summoner's rift.
This also includes the incoming stealth rework.
This would remove the warding for total map control and ward hunting from the game. That will remove a big chunk of the passive gameplay and allows people to do more and more risky things. Finally, the wards act now more like Clairvoyance. This means, you have to know where and when to ward. You could also remove Clairvoyance after this change from the game, so only Sight Wards allow to have that control.