Request of a Support main...please Riot....
Please give us a seperate slot for control wards. 
Not only is it extremly annoying that in late game you basically have to sell one of your items to get a bit more vision and clear vision from the enemies. No, the most frustrating thing is that everyone always expects the support to buy one while everyone else sits on their full item build. I know that DD's need their dmg and tanks need items to be a good frontline, I can't even blame them. But it's anoying that we are the vision slave of everyone else, this already got worse when the yellow trinket was invented and basically the support is the only one to ward now anyway since the yellow trinket has such a high cooldown. Before everyone could buy a green ward or two when vision was needed. Please give us, no give the whole team the possibility to easier ward especially in the late game.