I'm my current game (agrarian idyll, inward perfectionist) i just found the ruined ecu and settled it about 40/50 years in. I'm fairly boxed in and my base economy is pretty good but not that strong. In this situation its actually a disadvantage right now I'd say! As pop grows there in going to struggle to keep them in basic resources and my miss phase expansion to low hab planets will suffer. However once I get past that economic shock I think it's going to be super powerful but not really op as such as it's going to take a lot of work to keep it going properly.
This is the first Stellaris game I've been properly excited by for a while.
This is the first Stellaris game I've been properly excited by for a while.