I've been wondering about how to design an aggressive mode for UFOs, where it actively hunts your ships, and not make it too painful (and make you lose all your Skyranger just like that, like Xenonauts did). So here's the idea:
- If your ship is found and intercepted, you get to choose: either Engage or Land.
- If you choose Engage, you do the normal air combat.
- If you choose Land, you do a ground combat against the UFO. Regardless of result, after this battle you return to base - no continuing towards your original destination.
- Ships returning from a mission are never targeted.
(Yes, I know Piratez has the Cloaking Device rationale, but 1) rationales change, 2) there are other mods out there too.)