There is a Discord but nobody visited it so I stop linking and looking at it. You can post things here for now.
I'll look into all the things you wrote. Peons sometime get lost. They usually just do what is the closest to them. When a peon is assigned a building, it's a bit random and could be someone that is in the house...
Stability starts at 150 and then goes up by 500 every time it goes to 0 (150, 500, 1000, 1500, ...). The stability goes down by the number of earthquake. For example, after 3 earth quake, the stability goes down by 3 points.
I still need to find a better system. Maybe I'll just make it go down by 1 all the time or maybe the building shouldn't get destroyed. I like the yellow shard concept since it allow people to choose which building blueprint to get. This makes the game a bit less linear.