Hextall is going into the playoffs with the softest D in the NHL. Without addressing this expect the same result.
This is true. The most physical defenseman the Pens have is Mark Friedman, who isn't very good (even at being physical; he's just a pest) and isn't exactly the coach's favorite; apparently we'd rather have Chad Ruhwedel out there.
The next-most physical d-man is Jusso Riikola, and he's in the AHL (the Pittsburgh coach REALLY isn't a fan of him). Everybody else aside from Letang is various bland flavors of vanilla, who get pushed around easily and pose no problem for other teams in our crease or if they want to simply bulldoze the goaltender.
Letang can play dirty (i.e. play "playoff hockey") when he wants to, but he almost never gets away with it and only responds after he's been provoked by the dirty play of Penguin opponents about 100 times. It's not tough to get under his skin when the refs swallow the whistles -- until Letang pushes back. He's too important to waste time sitting in the penalty box.
Hextall might not be able to get anyone as cheaply (#6 pick) as Hagg, but hopefully he can do better than Hagg. It shouldn't be all THAT difficult -- assuming Hextall even considers this to be an issue at all.