Originally Posted by SoggyPants
It would decrease her dominance in the laning phase because it would be far more difficult to land a Q-E combo (which is where she gets most of her damage from). Maybe not, but I think so.
And her passive would let her die. It would just act as a revive without the stat increase which effectively negates the death timer. She wouldn't avoid death with it.
Changing the "shatter" part of her combo to the stun would make her ult -> E combo significantly better, which is what most good people try to do with her because her skill shot is so slow and easy to avoid. The skill shot is primarily used to catch runners after you've ult and walled them off from a certain direction so their only escape is a narrow path that you can easily stun them in.
Your change to this only serves to make her more powerful because frostbite is on a much shorter cooldown and far easier to hit with. Once she gets her ult she will just stunlock people in her ult.