So they reduced the mana cost to CS to 5% down from 8%. This will solve our mana problems, as it's roughly equivalent to 33% drop in mana cost to go along with the 33% drop in cooldown.
Now, this opens the door to a question: Will the Crusader Strike glyph stay the same, reducing mana cost by 20%, or now that they have reduced it already, will they decide to give the CS glyph more flavor? Perhaps, just maybe, they might add a debuff to CS through the glyph that matches to leaked CS changes about a magic debuff.