Map generation, some enemy AI, and most frustratingly: combat action outcomes. My story was the same as numerous other players: started playing hardcore, died

Map generation, some enemy AI, and most frustratingly: combat action outcomes. My story was the same as numerous other players: started playing hardcore, died not because of a mistake, but because of lag (internet lagged for a few seconds, that was enough for monsters to kill me, when internet came back moments later I was told I died). At that moment I decided not give ANY more money to Blizzard, and closed my WoW membership.