That was my first reaction. I, apparantly, fear change. However, after that brief moment of panic, I sat down to figure out just how much mana we're getting from this skill.

Glyph of Innervate changed a bit, as well. Now it returns 90% of your base mana to yourself if you cast it upon someone else, or combines the 90% with the 450% when cast upon yourself. This means a return of 3146.4 mana to yourself (at 80) when you cast it on someone else, or a total return of 18878.4 mana if cast upon yourself.
I'm definitely liking this.