User blog comment:JAlbor/Community Thoughts on Ward Changes/@comment-5266525-20131116005233/@comment-4814368-20131116010924

Sidenote, something they explain:

6. Ward Limits - Why are supports being punished for being proficient at warding?

We've deemed that the meta strategy of forcing a single player to take full responsibility for vision is not worth the cost to the game anymore.

We understand that this has deleterious effects on the full lights vision play - but the cost to the game of further supporting this style is harmful to the power level and design of support players and team coordination overall - thus we've decided to bite the bullet on this one.