One interesting note is the distribution of games by division-- if the season were to end today, the playoffs would consist of 4 Northeast teams (all but Buffalo), 3 Atlantic teams (Pit, NJ, NYR) and 1 Southeast team (Carolina).
In the first half of the season (counting tonight), the Isles will have played 10 of their 18 Atlantic Division games, 10 of their fifteen Northeast games, but only 4 of their 15 Southeast games (two of those vs. Carolina). Thus, in the 2nd half, the Isles will have more games (11) against the Southeast than against their own division (8) or against the Northeast (only 5).
I note some wide disparities in the split of games for other Atlantic Division teams, and note that after tonight every team in the Atlantic will have played either 9 or 10 divisional games. However, Pittsburgh, New Jersey and Philly have played 5 Northeast games each (NJ plays their sixth tonight) and have played 9, 8 and 11 SE games respectively. The Rangers schedule has been more similar to the Isles, having playing 8 Northeast games and only 5 Southeast games.