I always found fate eggs to be too random to rely on.
You can get something great or something useless.
Even if you did get something awesome, very likely it'll have an ability you'll want to use.
You have no quanta of other kinds to use.
But I guess factalling could cover some damage, and I like the shields in it.
Still, I'd rather combine fate eggs with SoR, or go for something with quanta towers.
And that is... if I'd use them at all.
Still an interesting idea, but I believe I saw this before, back when fractal was released.