That is such a hard question. But i would still keep Renesmee the same because its apart of her and i can't see her with a different power. So for your domanda i wouldn't change it
I like her current abilities, and how they're reflections of her parents' abilities. Maybe in future I'd see her developing her shield penetration ability a bit, since all we really know of that in canon is that she can get into Bella's mind.