@Riot , please consider Rebonack's Kog'Maw
With M-pen and Lethality a frequent topic and since the Riot Devs continue to push the game in that direction, can you please consider Rebonack's Kog'Maw? He's been trying to push the idea of a resistance shredding ADC (first of it's kind) for months now. Right now, Kog'Maw's mains are building Wits End into Rageblade which melts the magic resist off of anyone that steps in his path. Unfortunately, Wits End doesn't scale with anything but attack speed which falls off after champions purchase at least 1 MR item (I'M LOOKING AT YOU EoN USERS). Kog'Maw cannot shred armor the same way besides LDR. Don't get me wrong, LDR is a powerful item but Kog'Maw really can't use it effectively.
This led Rebonack to conjure up the most monstrous Kog'Maw kit to shred everyone into the void. [hopefully Rebonack will link his kit idea in below since I can't find it through pages of his board influence]. PLEASE CONSIDER.