I'm not sure why you thought this was the thread to stick this in, either. It's for simple questions/simple answers to help people, your "question" is some suggestion for the mage class. Stick that on the WoW forums instead.
I was thinking, this may be a novel idea regarding Frostfite Bolt and I think it may be fun if Blizz implemented it. I wonder how the damage would turn out.
Glyph of Frostfire: While the Frostfire Bolt debuff is active, all damage dealt to the target by the mage is converted into Frostfire damage.
I think it would be nice because it would utilize a FFB spec, but add Fireball to the standard FFB rotation, making a total of 5 spells in the rotation. I'm sure the damage increase would be substantial as well. Think this is a suggestion that could be pushed?