In this glorious bloodbath we call the war for the overworld, I believe there are some key issues with happiness that must be discussed.

For example:

If a human village were sacked by your creatures, they would be extremely happy. But lets say you had converted several humans, and used them to destroy the village. I believe they would be very upset or angry for the death of their kin.

They should have a small chance to rebel, leave, or halt work for awhile on the conquering of a village.

I am thinking for these %'s

5% leave
5% rebel
90% halt work

Discussion, go!