Once you make the choice of tying almost all of significant development (xp, upgrades, items, money) to quests and conversations
I hear ye, although getting "most rewards not in combat" for PST is a but theoretical. Game is designed to be like it, but actually not - powerleveling, laugh at it or not, in PST is definitely about killing high xp monsters, abishai, worms, shadows, etc. There is even location that entirely designed for this - top difficulty modron maze. It is made by developers as a joke, but actually serves well for leveling up
ur reward is actually seeing high level spell cartoons