I love the sound of IronHeart already, I think she will be amazing and I love the idea of a genius who is also a black woman and lord knows the avengers need that.
On the other hand though the avengers are kind of the biggest tool in the shed really so maybe it would be better for her to exist on her own for a bit and then maybe move into the champions or whatever and work her way up? What do you think? I've always found this to be a fasinating idea of legacy characters like when Bucky was Cap and with the new Thor