The far side of the moon is prime real estate for radiotelescopes. You can create a sizable expansion of the DSN by sharing dish time with the antennas you can build from local materials.

Well I fully assume that the DSN itself will move to space, courtesy of Starship's large tonnage to orbit.

I've been thinking for years we should built a space network of probe and satellite like objects - imagine if we landed a small relay on every asteroid passing anywhere near earth - could be highly useful for communication and possibly also give us a GPS like location assist for additional spacecraft