Ultimately atmosphere loss to the solar wind or low gravity are very long term problems, like longer than Fenspace as a civilization or even humanity as a species will likely exist long term. Even if we get Mars up to a full 1 atm at sea level, it would take tens of thousands of years for the atmosphere to degrade back to unbreathable levels left to its own devices.
At this stage, holding onto the air is not a big problem. Getting it to the point where it's more than just an annoyance is. It's an interesting irony of handwavium that the more ridiculous feats of planetary engineering, like artificial magnetospheres and planetary rotation management, are easy to pull off but the basic stuff like atmosphere and water generation are still long slogs.
Mr. Fnord interdimensional man of mystery
FenWiki - Your One-Stop Shop for Fenspace Information
"I. Drink. Your. NERDRAGE!"
At this stage, holding onto the air is not a big problem. Getting it to the point where it's more than just an annoyance is. It's an interesting irony of handwavium that the more ridiculous feats of planetary engineering, like artificial magnetospheres and planetary rotation management, are easy to pull off but the basic stuff like atmosphere and water generation are still long slogs.
Mr. Fnord interdimensional man of mystery
FenWiki - Your One-Stop Shop for Fenspace Information
"I. Drink. Your. NERDRAGE!"