Since this is a Guide, questions about Grepo 2.0 should be asked in the relevant discussion thread. Let's not clutter up all of the work that Eclipse has put time and effort into creating this guide with questions that are answered elsewhere.
Eclipse have you found the lowest mood that you can loot at without the villages going into revolt? Such as you can farm around 59% mood in the current version, as long as you have diplomacy researched, and you won't lose any troops.
This guide isn't entirely accurate. Various aspects of the game are constantly being changed, and farming is one of them. Don't expect the info here to be what's finally released. I'm waiting for them to finish updating and fixing everything before I spend any time updating this guide.