You need to setup aura triggers for some of those abilities.
For the overpower one, since it relies on having stacks of Taste for Blood and has no CD, the only way it would be visible would be having 1 or more stacks of that buff. This is what I use for arms.
Code:
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As for Recklessness, I noticed you only have 1 aura for it. You need two auras, 1 to track the cooldown progress set to inverse - so it shows all the time when ready, and the 2nd as an aura trigger for recklessness on you (player).
For Enrage, you need an aura trigger similar to Recklessness. Since its not an on-use ability, the only time you will see it is when you are enraged.