I don't think Defense will be our issue this year...
You can't make season altering decisions based on a 6 game conclusion.
But - if you were to do that, you may consider the following:
#1 - Pavel Datsyuk (a top 3 defensive center in the world) has yet to play.
#2 - Dan Dekeyser (our best defensive defenceman imo) has played 1/5 games. Which creates imbalanced pairings.
#3 - 2/5 games played so far, were the second game of a back to back. In those 2 games, we have allowed 7 goals.