At the moment, morale feels balanced, but you might need to adjust it when all obligations are finished. I guess level 4-10 obligations will also have a higher morale drop than level 2, and you have to compensate it.
Honestly, I do not really get what you mean with our mystery game. So you see what is happening in the doll art, but you do not know what's happening? That sounds somewhat strange. However, I like the idea of just hinting things and letting imagination doing the rest. It often has a better effect than showing everything explicitly.