What glyphs are you using for your shadow priest? I was thinking of getting the dispell glyph as well as the bubble glyph.
I am unsure though. My priest is only 63 atm.
All I've been doing is PvP lately, so I chose the Inner Fire glyph and the Psychic Scream glyph. The bubble glyph is nice though, and the Mind Flay glyph will be good after Bliz makes the change to it.
The Flay glyph isn't changing, it's the SWP glyph.
Right now, I've got Flay and Shield for PvE or solo'ing. If I PvP'd, it'd be Dispel and Shield. Not sure about the new ones because last I heard they weren't stacking with talents, but if they do stack it's SWP and Shadowform.
The psychic scream one IS useless... and its because of the trinket to get out of it, fear ward, or talents/skills that get them out of it. It would be better if the glyph lessens the cooldown time on the skill. Its kind of like the s1 gloves vs. s3 gloves. S1 extended the time of the psychic scream... pointless... s2 and on it shortened the cooldown. a lot more useful.