Rather than being delayed, Assassin damage should be conditional

Take everyone's favorite Assassin Skirmishing Bug Kha'Zix. He doesn't have too many delays in his kit other than his own cast animations, but ignoring the few times when he broke itemization rules (Tank Kha'Zix op) his gameplay hasn't ever really been considered overwhelmingly toxic or broken. Compare this to old Talon who had "circle of death" syndrome whenever he was strong or Akali's skillful gameplay that's actually slower than most assassins but also the most stat check based if not for her shroud. Giving every Assassin a generic "Survive for 1.5 seconds or explode" gameplay feels backwards, waters down champion design, and opens a whole slew of problems when other champions in the game have the same firepower without the delays.