Currently the mod is only showing spells and or abilities when they are READY to be used. This limits how quickly a player can respond. The paladin equivalent to this mod entitled "Serious Help in Timing" show's the next ability to use as soon as the current ability is EXECUTED which then allows you to see what you should be pushing next for 1.5 seconds (GCD) OR it shows the clock swipe of the cooldown so you know exactly when you should be pushing the button when you have nothing ready. This allows you to know at any given moment what's next, there's never a time where you see an empty box (which I currently see all the time). If the empty box phenomenon is user error I would recommend posting how to get it to now do that on the addon page as it is less than desirable. Great mod overall.