There are a few things i disliked in student adventures:
Vettor: it's a matchmaking type of adventure, i tend to dislike those in general and it pushes him toward Amanda, possibly the only +2 max in relationship from Vernin girls and a likeable character overall.
Olivia: In order to complete her adventure, you have to steal Cinzia's notebook about potions. You gain glory, but is not by your merit and stealing from classmates its not the way i would prefer, especially when it involves the best girl.
Tacito: you would think his personal quest is about him, but it ends being about Ausdauer instead.
Magalda: same matckmaking kinda of deal, except that its not only about her and her crush, you also try to get Marc and Cordelia togheter.