Although I would want it appealed, filing an appeal and then defending it is very expensive. An attorney in my family told me that at best, only 15% to 20% of appeals get overturned. As with filing a law suit, the language in the appeal would need to be very explicit and compelling with regard to explaining how the judge may have made errors or overreached in his decision.
Unless it's really egregious, it's a very high bar to overcome, more so since the 4th Circuit Court of Appeals already overturned the Maryland AWB 4th Circuit Court of a 3-judge panel which stated that the AWB "...law should be subject to "strict scrutiny" because it imposes a "substantial burden" on the right to keep and bear arms."
4th Circuit Upholds Maryland's 'Assault Weapon' Ban