So... what happens if the rebels do a complete hyperspace retreat on round 4 (or 5), all of they're ships are gone. Are all of the unarmed stations considered destroyed because the rebels have no ships left and the imperial team gets the full 120 resource points. This seems to make the most sense both in the game and thematically. If you stop defending unarmed stations, they should be destroyed. However, I'm playing the imps and about to play this objective, so I might be biased, need a reality check.

Alternatives:

The stations considered 'ships' so the game continues and the imperial player tries to destroy the stations with the remaining time, of course then any remaining rebel squadrons would still be in play, and could activate and also be targeted.

The game ends and the stations are not destroyed, essentially the rebel player is considered to have defended them. If both stations are likely to live through round 4, there are cases where this could be a valid tactic for the rebel player to deny the imperial resource points. The imperial would still get 40 for winning the battle. Running away should not be a valid defense, but maybe this is what's intended. My biased opinion says, absolutely not.

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I hope this will remain theoretical in our campaign, but just in case...