Speaking Moistly
What a terrible image.
It all comes down to puck retrieval for me more than anything else. I love Sid, Geno, and Phil but their puck pursuit is just not consistently there on the PP unless it's a desperation situation (eg, the playoffs).
Second biggest issue is the over passing. When you combine the two, it gets ugly quick.
I'd say the overpassing is the worst, then the love of standing still, then the puck retrieval and then the struggle to enter the zone. It's a lot of problems.