Auto-translated
I also play on random maps; we only played with elements a few times for an experiment. And they really do get dwellings often. Try loading a random map with a Conflux several times and opening them each time over the course of a week; personally, I got the result I wrote about. I don't want to spend too long checking, so I might be wrong :)
Added 5 minutes later
Unfortunately, I can't chat anymore (work is over – it's time to go home). I'll probably be back on Sunday, and then we can continue the conversation. If you need anything, here's my ICQ number: 201638134.