We've discussed both these topics at length already, so I don't think any sort of hardcore analysis is really necessary. But here are a couple notes from Jenifer Langosch (both via MLB Trade Rumors).
-P- She guesses that the Pirates "are ready to move on" from Paul Maholm. That might be fine if they can get someone decent to replace him, but the Bucs aren't known for signing good free agents. And one of the four remaining starters they'd be counting on would be Kevin Correia.
-P- She says Joel Hanrahan, Charlie Morton, Jeff Karstens and Evan Meek are the only arbitration-eligible players who appear "absolutely certain" to receive contracts this offseason. That leaves Garrett Jones, Chris Resop, Jose Veras and Jason Grilli in the who-knows category. Ross Ohlendorf, Brandon Wood and Steve Pearce are arbitration-eligible too, but I think we can probably assume that they won't be tendered.