I have some glyph ideas to share around.
Glyph of Desperate Prayer
(new): your Desperate Prayer may now be cast on a friendly target, healing each of you for half the amount.
Glyph of Mind War
(new): your Mind War no longer heals you directly, and instead causes all healing the target receives to also heal you. This, I think, would lead to some rather interesting gameplay in PvP. It shouldn't have much effect in PvE of any kind, but it's still amusing.
Glyph of Black Shield
(new): (Mentioned above) your Black Shield no longer grants immunity to silence and interrupt effects, but it now effects up to 6 party or raid members within 20 yards, absorbing 55% of spellpower per orb per target.
Glyph of Despair
(new): your Despair now always consumes only 1 shadow orb, instead of up to 3.
Glyph of Dark Binding
: you can now cast Prayer of Mending and Renew. (Amounts to basically the same effect as before.)
Glyph of Reflective Shield
: now also applies to Black Shield on you. (Amounts to basically the same effect as before.)