Warning: This is kinda long. At first glance these changes might seem OP, but please remember that heat damage is hugely sub-optimal against most enemies. So she needs this much power synergy, in order to scale with the enemies.
I like mEmber, but I actually like the direction of her WoF's change. I honestly hated stealing all the kills from teammates, but it felt like a necessary evil most of the time. It's because WoF/firequake, is currently Ember's only practical/efficient/survival abili