Personally I think that this "wave" of legacy heroes is a piss poor way of diversifying the line-up without changing the merchandise on the shelves.
I'd much rather see Falcon toys than Cap toys that are for "all people" as if Captain America is now this distinctly whites only character. I'd rather see Black Widow leading the Avengers than a guy who changed his laundry. I'd rather see Monica Rambeau and Sif than Lady Thor on the Avengers...especially since Odinson is STILL AROUND and has no reason not to be An Avenger.
Diversity needs to have integrity, or it doesn't stick.