If you are to believe Topdrawer Soccer, Harvard appears to have the #1 recruiting class next year in D1. I take most of those rankings with a grain of salt, and think there are many schools with very good classes (both UCLA and USC have some legit talent on the way), but the Harvard class appears to be legit.
That being said, the Harvard studs will be competing in a league with no post-season tourney, travel restrictions while classes are going on, only one way into the NCAA tourney (winning the league), and nowhere near the level of conference competition of a power 5. And you are not on athletic scholarships, so most Ivy coaches come to realize sports is a third priority for their student/athletes, behind academics and socializing (you are also at an IVY to make connections and to become part of that alumni network, not play soccer). There is an art to keeping Ivy athletes engaged which needs to include enjoyment and fun, that is different than coaching at Duke or Stanford, and does not typically include a shared goal of doing whatever it takes to win a national championship.