re: Landing at Aitken
I'm sure the idea is to add repeaters to comsats that will be placed in GEO anyway, and perform their normal function from that orbit.
When astronauts will venture into farside, at least in the beginning, they won't go that far ; same for the first trips into the nightside of the Moon : they won't last that long. At the poles, the night and day sides are not far from each other.
But later on, of course, better located comsats would be required.
Raoul