NNNNNNNNNNNOOOOOOOOOOOOOOOOOOOOOOOOO... Now every DPS DK will be forced to DC the tanks on progress fights to keep them up more
. Heck if it works on self now Blood DKs will have to choose either threat or shield. This is quite possibly the worst decision. Especially considering that the AoE sward DoT on DC will be given back. I hope they either change the glyph or remove it completely.
Imo best way to do it: Glyph of Rune Strike - Every RS now places an absorption shield on the Death Knight that absorbs % amount of the damage done.
Now you'd get a nice benefit from spamming that RS.