Cancer
Why does every new champion look the same? (generic) dash, invisibility, TONS of mobility and spammable spells. Why is there no variety of builds anymore? Every single game everyone builds the same exact thing. Where's AP trist, where's AP kog, where's AP yi? Why is Riot removing build variety and not letting people choose their way of playing? Why were so many good items removed? Why are so many old champions dead because they can't compete with the ridiculous designs of all new champions that come out? Why do champion reworks turn interesting champions with interesting playstyles into generic champions like the new ones? Pyke and Kayn are example of cancer champion design because they have everything = gap closer, escape, tons of DPS, speed boost, invisibility, Pyke even has a pull like Blitzcrank. They have EVERYTHING at once, while old champions were balanced and had one thing but lacked the others. That's why they're dead because they simply can't compete, until Riot decides to rework them and turn them into another generic champion that has everything just like the new champions.