Traditionally, the captain is the last man left on the ship....One thing Frontier could have done (well, there's a lot of things Frontier could have done, of course, but just stay with me here...) is leave one person in charge of Galnet to make some articles to "lore-ify" the suspension of Galnet itself and create a small story out of that to explain its disappearance from the galaxy. A relatively low-input storyline covering the period until Galnet returns, rather than just let it all dry up without any in game indication.