Idea: give Nautilus old Morde's walk animation
Nautilus walks with his weapon slung over his shoulder, as did old Morde. the difference? Nautilus's position and arm movement makes him look goofy as hell. Nautilus's walk makes him look like a small child trying to look innocent while having stole something, while Morde's old walk looked legitimately threatening. Nautilus isn't supposed to be a goofy champion, so why did old Morde (a basically intentionally goofy character) have a more threatening walk cycle than Naut did? basically recreate old Morde's walk onto Nautilus, and you've instantly made Nautilus a better designed character.