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Take artwork that brings morale down to zero, and that's it. The best solution is the Angel Alliance or a +3 morale and luck amulet. Ignoring this slot is not profitable.
For me, the following are terrible: Eagle Eye, Leadership, Dodge, Intelligence, Training (% experience), Catapult, Balustrade, Navigation, Treasurer, Bookworm (spell exchange...).
The following are great: 4 magic skills, Logistics and Pathfinding, Diplomacy, Tactics.
I started using Diplomacy when, in one week, 4,000 Crystal Dragons and monsters joined me. However, it's hard to upgrade these monsters later, just like Titans. (where do you get so much money and resources?)
Летай иль ползай конец известен, все в землю лягут, всё прахом будет...