I am working on this. In my experience the issue lies not with morale, but with unrests. I haven't made any changes to how they work and It looks like vanilla unrests are way to harsh. At least in the context of this mod, where having low morale for a couple seasons is within expectations.
Viewing post in Production chains in Admin++v2 comments
Yes, I understand. I've played only a few games on low hostility and my own civilization always does me in because of unrest and murders. I know that hostility has nothing to do with unrest, but ... it does seem a bit too difficult to understand happiness ATM. I hope your mod can make leaps! Cheers for your work.