It is true that the Ivy league has placed restrictions on football recruitment that are not shared by most other sports such as limiting the number of recruits and limiting the number of low AI recruits. This does not mean an AD cannot specify a maximum number of fully supported recruits allowed per year and a minimum AI score that a recruitment class is expected to meet for a given sport. For the purposes of this discussion I am assuming that the number of verbal offers is less than the number of slots available prior to senior year (if you look at the recruitment websites in this thread you will see that this is true) and that a 4 year rolling average is used for both the number of recruits and the AI number for the school (I believe this is part of the Ivy league rules).
1.) As long as a coach makes a reasonable number of verbal offers during a player’s sophomore and junior year then the recruitment class size can be easily controlled. For women soccer this appears to be one verbal offer for sophomore class and maybe five for the junior year class.
2.) If a coach specifies a minimum GPA and test scores as a condition for a verbal offer then the Minimum AI can be maintained. The minimum AI for all athletics recruits is based on a 4 year rolling average for that college and is based on the GPA and test scores for all students. This number does not change much year to year and can also be predicted from previous GPA and test scores. If a coach holds one or two slots open for a class to recruit seniors then any minor changes in the AI can be compensated for. The coach can also build a slight cushion in the AI using the 4 year moving average which should be able to compensate for any unforeseen events.