Absolutely.
The issue for me is two-fold.
First, with each passing season with the addition of more and more puck movers, our blue line is growing softer. If this keeps up, we may as well change our logo from a Leaf to a pillow.
Second, and probably more important, is that when you have too many offensive defensemen on the roster, some will need to take on a defensive role on a semi-permanent basis. Why would we want to turn Gardiner, or Rielly into another Gunnarsson?
Unless the defensive pairings develop amazing chemistry, to a point where they can read each others' minds, and know when the other will pinch, they may be very vulnerable defensively in an event of a turnover.