Glyph of Arcane Secrets Slot 1: Decrease Spell Mana Cost by 1% to 20% Slot 2: Limit Spell: Exclude Complete Heal Slot 3: Limit Effect: Exclude Current Hit Points Percent Slot 4: Limit Combat Skills: Exclude Slot 5: Limit Max Level: 105 (lose 100% per level) This has been asked since Beta, by multiple people, in multiple threads. Created a DBG Issue Tracker ticket for it as well. No reply from the dev team anywhere, while other issues in the same threads are replied to and addressed. This glyph has been non-functional for almost 3 months now. Is it officially dead and discontinued?
Nope. Go take a look at the two versions. Glyph of Arcane Secrets II was updated to include 105 spells a month into the last level increase. There aren't 8 different Glyphs to cover all of the different levels that it could cover (or more...) An answer from the devs either way would be nice here.
At this point it may be better to give up. If you annoy them until it's fixed they'll probably just increase our mana costs by 20% to make things even worse than they are now.
Once you're max everything then about the only thing to consume AA is using glyphs during play, especially raids. I'd like to see them add a whole new level of power to them and increase the cost to 15AA per 30 minute usage.