Well, I've looked at various moons looking for good resources to utilize, and the more you look at them the more different they look!
For example, Iapetus is the ONLY moon out there which combines a near pure ice _surface_ with a slow rotation rate (suitable for ice prism solar concentrators).
And even just the orbital positions and gravity levels have a huge impact on utility.
Terrain is also extremely different - compare Hyperion with Mimas.