First off, Congrats to the Ravens. They deserved it.
Significant players I think they'll lose: Lewis, Reed, Kruger, Birk
I think they'll keep Ellerbe, Pitta Cary and restructure Boldin, Jones, Suggs. They're also going to get back Webb.
They beat the Pats in week 3 without Suggs, who I think is more important than Lewis. They beat them in the post season without Webb, who isn't as important as Reed, but not far down the list.
They're still perfectly capable of beating the Patriots next season, even after some of those FA's leave, especially if the secondary for the Pats isn't fixed. What they did with Caldwell at OC has made them into a pretty good offense. They're still a formidable opponent.
The trademark of the Ravens seems to be how close they all are. A lot of people, outside of the locker room, talk about this team is like a family. It'll be interesting to see how good this team is when facing adversity without their "Godfather".
Ravens will still be in the divisional round next season. That being said, I think they're trending towards the wrong path. If Flacco becomes a 20 million/year avg QB, then they're becoming another team that will be ultra reliant on its QB. You might already see through this offseason how many good players a big QB contract costs you. It's probably inevitable and part of the league parody. Best all around teams are usually built before the franchise QB gets his big contract