Oh my. Yes, I definitely disagree that either Nicky Anosike or Michelle Snow would have been better choices to coach posts than Jon Harper.
As much as I admired Nicky and her no-nonsense, take-no-prisoners attitude, I was never a big fan of her post moves. She was too mechanical and tended toward bringing the ball down low after offensive boards instead of catching it high for a more-difficult-to-block putback. Maybe she developed her post skills more in the W -- I don't know. But aside from her aggressive attitude and her ability to get her teammates focused, I wouldn't necessarily want our posts to emulate her college post moves.
As for Snow, what makes you think that she'd be a good coach? I admit that I haven't kept up with her career, but I sure haven't heard anything about her being a great post coach.