What about these:
- Ressource pods, pretty much like roids pods: ships that would act just the same, but steal ressources instead of pods.
- Use of fuel in a way?
Possibly having a 4th ressource that ships would use to travel, or have the ships need some ressources to launch.
- The possibility to dismantle constructions...
If you're at the max sometimes you'd like that this or that structure wouldn't exist, so you can build another one instead.
I know it won't be done for round 17, but for later then maybe? I thought I'd just throw in my ideas, good or bad.
Cheers