I'm just pointing out that the criticisms of the Leafs defense isn't just non-Leaf fans bringing it up. Leaf fans also seem to think it needs addressing. If it was as good as you infer, this shouldn't be the case. I'd be surprised if Nashville fans are screaming "we need defense!" after their losses.
An improvement would be nice with the aim Being a cup. I don't think winning a cup with this defense is impossible (they're still top 3 or 4 in the league) but the chances would be better with another top dman on the right side. Tampa is a massive obstacle.
Does it "need addressing"? If we want a chance at a cup, no. If we want a to be the favourites, yes.
Pittsburgh won a cup with a comparable defense when letang was injured. And while Matthew's and Tavares are not crosby and malkin the rest of the offense is better.
Is it the best in the league? No. Not elite. It's the weakest part if the leafs. But it's not weak in terms of the whole league by any stretch.
I also dont want to bring in anything that causes long term cap issues. The leafs have spent the last couple of years drafting dmen (liljegren, sandin) and signing good young prospect type dmen (rosen, Bergman, ozhiganov, and even zaitsev) to shore up their defense. If ANY of them progress it makes it easier to start filling holes.
When people bring up the 5th best GAA in the league, that's more in response to people claiming the leafs d is downright bad. It's not. You can't have one of the best GAA in the league with a terrible defense no matter who your goalie is, and the leafs aren't even the worst GAA with sparks in net, let alone a bonafide starter.
Let that sink in. The leafs goals against is somewhere around 15th in the league. With what was supposed to their AHL starter in net. Does that scream "terrible defense" to you? Yet that's what all the mouth breathers here will try to convince you... the leafs defense is among the very worst..... maybe, just MAYBE the leafs d is a little better than some of the fools around here will have you believe.