it doesn't really matter. what was a great idea was to make her co-1 when she returned.
even in the books theres an asterisk next to her year end ranking of #8... so maybe they could have taken it that far, but i really don't think it would have made any difference. monica was obviously disappointed that no one seemed to want her at #1, but what hurt her psychologically more i believe is what was going on (or what wasn't going on) in germany. if that had been settled better, who knows what would have been different?
freezing the ranking is not really necessary.