I don't change a thing - except the amount of butter it's sauteed in. You need less than half of what it calls for. Also - when boiling it, you should just boil it until it floats around the pan. Whether or not that's the amount of time listed, I'm not sure (I've never checked.)
This time, we didn't take the time to roll the gnocchi across fork tines.
The recipe could easily be cut in half for a family, but I like to make the whole thing and freeze half. They can be frozen before or after boiling. Also - in the two times I've made this, I've not been able to get 3 cups of sweet potato from 2 potatoes. I recommend getting three.