They're 6th in GA this year. 7th last year. pretty sweet, I'd agree.
for once, the Leafs problem is actually not defending. I'm as surprised as you are, believe me.
a main issue they've had in the postseason is scoring goals, regardless of opponent. Anyone who watches especially the last two series losses can see that.
if there's any issue with the defence right now, it's that the collective offensive ability of Muzzin Holl and Brodie is not good enough for the top forwards we have. this is reflected in the lack of points from the blueline corps as a whole. essentially, a more skilled but still defensively reliable option in the 3 or 4 spot is needed. I don't know that they'll get it, as players fitting that description tend to be pricy. none of the names I've heard fit the bill.
now they may acquire a veteran depth player at the position for insurance, but don't expect that to be a needle-moving trade...think Bogosian replacement. but he is tough so I guess that will make you happy??