I would have to personally say that i could never warrant dropping the glyph of revenge. It alone allows you to get off a heavy revenge and a completely free yellow attack heroic strike for 2-5 rage depending on talents. This allows you to use HS on a more regular basis and makes for much higher damage in the long run. I really would not advise any tanks to drop the glyph of revenge for anything. Use revenge, blocking, and then have options.
Originally Posted by Bayho
"If I'm doing a fight and I need more threat... I try harder. If I'm doing a fight and I need my taunts not to miss, then I wear hit." -Veneretio