To all the people who are complaining about buying energy:
The real challenge would be to make ourselves self-sufficient in energy. The key, apparently, is to never revive more than one time. You can get to the point where you make enough crowns in a stratum that it lets you buy back the energy you used to do it times 2 or 3. It's free to rejoin a friend too, and it's always possible to restart a gate. Plus it's free if we revive each other and okay to wipe sometimes because you keep everything you picked up except the minerals.
How many threads do you need?
Also, thanks for stating the obvious.