I like steadfast how it is. If mobs are crowded around and I don't want to hit them all, I step to the side to kick it off. I like that it automatically comes back on after 30 seconds. Adding it to the action bar would take up a slot, forcing me to give up something else. Making it a button might be ok for a controller but I prefer keyboard only (never use mouse/keyboard combo) If its not up at the moment and I need to AoE something (like someone said about a mob popping and deciding if you need to claim it or not) I just hit Broad Swing or Full Swing. This is actually a better option cause it is just enough damage to claim the mob without making it too hard for a tank to pull the mobs off you if needed.