Jinx and Rengar
Life story: I just played a game as rengar top. The nasus was new. Still, I was 10/3 ish at like 15 minutes. The game ended wiht me being 15/7 i think and the enemy jinx who had an average kd in lane 25/8. She was ONESHOTTING US. Lategame there was NO WAY TO KILL HER, even as a "fed" Rengar. The feeding Rengar gets means nothing while the NOTHING jinx gets catapults her to absurd levels of power.
Rengar: Really needs a way to KEEP his kills. Most games I play he becomes totally useless after 20 minutes or so, even if he;s insanely fed.
Jinx (and I assume other ADCs): No. Just no. From my experience they need more counterplay. EVERY adc I see is oneshotting poepl with autoattacks. THat's not the point of ADC. THey are supposed to require positioning and sustained damage and kiting, not jsut ONE TWO THREE BAM YOU'RE DEAD! Lucian, Jinx, and other ADCs that use crit are too powerful. I have seen VERY FEW of them who didn't do very well or win. THis is just from my expericne, rmbmer, and if you downvote comment with WHY.
NOTE: I swear to god if anybody starts posting about Rengar OP i'm gonna flip. He is weak in the current meta. You cannot take away every element of a champion's kit; deal with it. You already gutted his bread and butter spell, so stop whining.