You wouldn't really need to worry about building earth units on the moon if you have terrain damage set to a ludicrously high number and all the moon units have a 'space suit' promotion that reduces it to 10% or something. If you gave the moon terrain a big defensive malus like -75%, and had the spacesuit promotion give you a +75% defense bonus then even Earth units stuck inside cities/forts would be useless for defense.
Not sure if this is possible, but for the initial colonization it would be neat if the constructor ships built on Earth had a series of 'target destination' buttons that corresponded to unique terrain features on the moon, and whichever one you choose would consume the constructor ship and spawn a fort on the unique terrain. Then supply ships could be 're-based' to the fort. It makes sense to me that in the early days of lunar colonization there would be a shortlist of desirable landing sites and after those were all claimed further colonization would only occur when the initial lunar bases had developed enough to launch their own efforts.
For routes I can only see two reasonable options:
1. There would be just one kind of road: lunar regolith that has been leveled and packed down. There isn't any point in paving a long stretch with concrete when it's in no danger of washing away from rain and meteorite impacts would require constant minor repairs anyway. And lunar dust packs extremely well, without any erosion it's all sharp edges that tend to lock together when compressed.
2. Maglev elevated trains would be extremely effective on the moon. With the low gravity and no atmosphere they wouldn't need much power at all to stay floating and could accelerate to ludicrous speeds. With the rails elevated off the ground there wouldn't be much terraforming work involved and the small cross section would make meteorite damage much less likely.
Not sure if this is possible, but for the initial colonization it would be neat if the constructor ships built on Earth had a series of 'target destination' buttons that corresponded to unique terrain features on the moon, and whichever one you choose would consume the constructor ship and spawn a fort on the unique terrain. Then supply ships could be 're-based' to the fort. It makes sense to me that in the early days of lunar colonization there would be a shortlist of desirable landing sites and after those were all claimed further colonization would only occur when the initial lunar bases had developed enough to launch their own efforts.
For routes I can only see two reasonable options:
1. There would be just one kind of road: lunar regolith that has been leveled and packed down. There isn't any point in paving a long stretch with concrete when it's in no danger of washing away from rain and meteorite impacts would require constant minor repairs anyway. And lunar dust packs extremely well, without any erosion it's all sharp edges that tend to lock together when compressed.
2. Maglev elevated trains would be extremely effective on the moon. With the low gravity and no atmosphere they wouldn't need much power at all to stay floating and could accelerate to ludicrous speeds. With the rails elevated off the ground there wouldn't be much terraforming work involved and the small cross section would make meteorite damage much less likely.