Minuses: Although they are giving up the second-fewest shots on goal per game (28.8), they sometimes give up too many quality chances against. The defense needs to be better in order to not allow this to become a trend moving forward.
Defenseman Shayne Gostisbehere had 37 points (nine goals, 28 assists) last season after having 65 (13 goals, 52 assists) the season before. So far through 17 games he only has six points (one goal, five assists) and is a minus-5. The Flyers are going to need more out of him.
Lastly, as has been a problem with them in the past, the Flyers seem to follow winning streaks with losing streaks. When you do that, it's tough to build momentum, so hopefully for their sake that doesn't happen after this winning streak ends.