I remember reading that competitive ballroom dancing was once considered to be added, but was voted down.
If going by reasonable objective standards used for other sports, women’s ice hockey would be eliminated. I’m glad it’s not, but far fewer countries can field a competitive team than for baseball or softball. You’ve got two A level teams, Canada and the US, then a few C minus teams, and the rest who’d get smacked by a high school girls team from Minnesota or Manitoba.