ADC needs to be more balanced.
I believe that the ADC role right now is too strong in comparison to jungle/mid/top.
Compared to previous seasons ADCs now have way too many tools to succeed. It's come to a point where positioning which was a key factor determining which ADC players were actually good or bad hardly matters anymore. Currently, ADCs can just stand still and click on one target and let their hands off the mouse and keyboard , have a ton of shields on them and win the teamfight.
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ADCs laning phase is way too safe and passive. Most ADCs now are going warlord's bloodlust (scales really well into the late game too) which gives them incredible sustain for a very safe laning phase. With this mastery along with recovery, tough skin, runic armor, and fearless ADCs will almost always be full HP in lane. Along with the extra sustain from healing/shielding supports and the Windspeakers blessing keystone, ADCs basically get a free pass to scale into the mid/late game. ADCs should have a weaker laning phase if they can scale so well later.
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itemizations Lets not forget that ADC items got heavily buffed(infinity edge, statik shiv, and rapidfire cannon). These changes let ADCs hit their powerspikes way earlier than they used to. On top of all these items, items such as locket, knights vow ( even built by junglers now) , redemption, ardent censer, face of the mountain, athenes holy grail help ADCs survive against assassins. If assassin's can't take out adcs the game just becomes whoever has the better ADC wins.
Jungle meta right now For almost all of season 7(after the lethality patch) the junglers that have dominated the game so far are all supportive junglers meant to help your ADC further succeed. As seen with ivern, zac, nunu, and now maokai,sejuani, and cho' gath. Playing jungle right now feels like a coinflip to see which team has the better adc every game. Both adcs just afk solo farm while supports roam without consequences due to relying on catchup xp to get them back into the game.
TLDR: Meta right now is whoever has the better adc wins. Revert catchup xp, nerf shields/ardent censer or itemization because the role is busted right now.