Message to User:
Single space after a punctuation mark. What you've done is crammed words and sentences together with no separation, making your post harder to read.
Considering that most of our gear now favours spirit over intellect , I believe that Innervate glyph > IS glyph in terms of raid support.On my current level of gear which is mainly 25man I still have mana issues on some fights with 3/3intensity 0 in dreamstate.I have around 1200 mp5 while not casting raidbuffed so I pretty much get around ~14k mana everytime i Innervate a healer.This is enough reason for me to choose the Innervate glyph over IS.
I also find the hit reduce from IS useful on some fights (for example Patchwerk soft enrage;4HM tanking,Malygos spark etc) when combined with Hurricane(50% slower attack speed from hurricane and 3% miss from Insect Swarm).