There are plenty of Runes in GW2 that have CDs. For example Superior Rune of the Mad King has 45s CD.
I think it would be nice to have an indicator similar to Utilities that would show how much time until Rune's CD is off. I feel like it might be a nice addition and wouldn't break the game.
EDIT: Rune CD Indicator is only visible to you, not enemies.
What do you think?
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