Nerfing sivir is soooooo not the answer
How many more times are we going to nerf sivir before we learn that that's not going to cut it? The reason sivir is played every game in LCS and has been top tier for so long is NOT because she's blatantly op, but because every other adc is weak in comparison.
For the past year now, adc's across the board have only been receiving nerf after nerf, with the occasional exceptions like mf's rework, ashe's reword, vayne's buffs in 4.13, varus' slight buff in 5.5(his q got the cd to start at the start of the cast rather than when the arrow is fired), and cait's passive buff in 5.11
If we buff other adc's so that they aren't all weak, we wont need to nerf a champion thats already received tons of nerfs!
who is basically the Zed of ADCs in the sense that Riot will not touch her, except once in a blue-moon for a love-tap