Hi, the combat in this game won't really evolve too much outside of what it is, unless it's to fight a specific character or boss, because the main focus of this game is the story/romances. The combat/combat quests at the guild are more just content to help the player in the beginning.
But there will be more quests at the guild, but they'll be romance content with certain characters.
And the other two main girls will be the focus of act 3. They'll have as much content as Lily did in act 1.