I just had, bar none, the most pleasant game of Ranked in my entire career (only about 130 games mind you, but still). Teammates all worked together, communicated about buffs/builds, and a few of us (opponents and allies) stuck around in postgame to discuss the game's events and when the pendulum swung too far for a comeback. It was all very friendly, and a HUGE change from what I remember games being like when I joined (somewhere in S1, around the Vayne patch).
tl;dr - Your efforts are having very tangible benefits, and they're highly appreciated. So thanks.