You may right but not for necro player. If I press everything I could possibly press, that will cause a fail. Nowadays players wants to be fast in the dungeons. So most of the time I'm the only healer at the party. Sometimes we dont have a tank :D. So if I miss something a player probably gonna die. As you know necro class using health points for some of important skills like dark aura and heal so sometimes we need to use potion. Adding 5 or 10 more squares to hotkey wont cost anything for AIGRIND I guess :D.