I think what people don't realize is the transition from NXT to the main roster is a big jump. It's getting a whole new audience familiar with a certain character. If you debut too many women at one time, it's hard for the audience to get to know, understand, and see the rise of that character.
Sitting front row with my little brother, my older brother, and my dad's wife at the time - seeing 80,000 people at the Citrus Bowl emotionally pouring their hearts out watching my dad retire - I didn't even grasp what he meant to the industry. I didn't even fully grasp it until I started wrestling myself.