The reason ADC's are so weak this season
While it is true that the increase of the assassins, and the changes in armor pen play a factor, I think an overwelming factor could be due to the introduction of Autofill. Think about it, ADC's and supports are the only roles that are almost completely dependent on another player playing well also. I would be curious to see the stats, but i think it is safe to say the majority of autofills go to the support role. that means that ADC mains have a much higher risk of getting someone that doesn't play that role as their support. Especially since the introduction of the pick your roles before the draft went into effect. People haven't played support but for the few times they get autofilled, are getting stuck with the role. So Gold and platinum ADC's are expecting their supports to play like gold and platinum supports, and they get let down miserably.
What is the solution? I don't know, I'm hoping maybe someone at riot might be able to figure it out. I am not meaning for this to be another bash on autofill, but just wanted to know if anyone at Riot had thought of this and has any ideas for a solution. Obviously ceasing autofill would create a bigger problem than it would solve, and queue times would shoot back up, especially in higher elo. I'm not sure if this is possible, but maybe they could adjust the matching algorithm to match up teams that both have autofill supports. This might lessen it by making the bot lane matches overall more even.
Just a thought.