So it's another month, minimum?
Well, I can wait that long.
Regarding all the discussions about sexual assaults on captured populations, there's probably a lot more to shore leave than that, not to speak of other conditions.
The Atmosphere might be toxic and the captured populaceconsist of spikey balls oozing venomous acid;
Maybe aside the productivity modifier, it should also be affected by the colony habitability, maybe reducing efficiency by 10% relative for every multiplier higher than 1?