Animated blocks -
- Joints (at wings or ailerons, sweep wings) - best activated by pressing a key
- Iris Shutters (to close and open windows, topedo tubes, engine outlets, cannon holes aso)
- Spacedock doors
- Rotating blocks (f.e. for building rotating radar antennas, spinning drills of mining ships aso)
Or building ships that look like they "live" - like giant snakes, dragons, jellyfishs, cephalopodes, sharks aso
Like in Galactic Civilizations III