Is there any actual purpose behind this glyph?
This came up in a guild discussion, I've been playing my paladin Prot for longest time, and a Ret paladin Dual-specced Prot and was looking for some starter tips and stuff, and was asking me. One of the questions was:
"Should I get [Glyph of Avenger's Shield]"?
My answer: NO!
Then we got into a discussion of why...
1). If you're solo grinding, you will want the multi-hit of the unglyphed Avenger's Shield, fighting 3+ mobs is a quite common occurrence in solo Prot.
2). If you're tanking an instance, Avenger's Shield gives you quite a large amount of threat when used to pull a group of mobs. Not to mention, it helps in boss fights that feature adds, it can crit for up to 3k+. That's a decent chunk of damage.
The only situation where the Glyph would actually help you, would be if you are fighting a single mob, a boss. But yet, a Paladin's main strength is their ability to tank trash pulls, AoE threat, right?
Why on Earth would you remove one of your many AoE tools, just to increase your DPS on 1 ability on a 30-second cooldown? That's what, assuming 3k hit, that's 100 DPS. Wow.