BUG[?]: Even if you lose a Defense Mission, you still get the reward sent to your storehouse. That works (confirmedly, but not only) in the Tribal Throwdown and Gentleman Thieves missions.
In Defense Mode, is there a way to attack units directly aobve/below or behind a unit?
If there's not, you should make the losing condition for the enemies to get to the last space, not through. I mean, if it's impossible to win, why delay the inevitable?
I totally agree with nynniva and Mytrandir. There should be ways to get fame other than selling the students.
Another thing that's frustrating is that after getting to grade 30, the students keep accumulating LP. You should make it so that after getting to grade 30, they stop getting their part of LP after quests, and its divided to the rest of the party.