From a design perspective, adding an aura toggle is not a simple request. You have control of what you look like on other clients (equipment, vanities, titles, badges, Show Helmet option, Show Vanity Helmet option, Show Vanity Armor option, etc.). We don't allow player A to control what player B looks like on player A's client. These players have essentially paid for what their avatar looks like to others (through time/skill/money).
We've discussed it internally many times, but for now, we're not planning on adding the option.
-ALS
PS: I'll start another thread about the target indicator (red zone) issue. We will soon have a new solution for that.
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