Schnyder is not a big tournament player. She was never destined for Slam greatness. She is ranked so high because she can throw a good opponent off on the right day, gets deep into tournaments and wins the odd title. I just don't see her beating 3 Top 10 players in a row, which in a slam you have to be able to do on the biggest stages.
Now someone who is slam material who I would love to see pull it together is Nadia Petrova. She has her mental issues but she definitely has the game.
Мари́я Ю́рьевна Шара́пова , Јелена Јанковић, Venus Williams.