Trying to bite my tongue here...
I think that the most important variables here with the group listed above (good list nite) are 1) availability and 2) contract status. I'm guessing that only about half of these guys are actually available (at reasonable cost anyhow) and many more are totally impractical due to contract status.
That's the biggest problem with the trade proposals tossed around here -- most of them are evaluated only on how the fit would be for the Bruins, instead of the variables mentioned above. Ideas for top 6 forwards are almost always unrealistic, which is probably why the OP tried to avoid that mess here.
I look at someone like David Jones, who's available and might fit in well, but his contract is obscene for the amount he produces and he's on the books for $4 million a year for 3 more years after this season. No thanks.
That's why I like guys listed like Matthias, Glencross, R. Jones, Smid, Murray -- all are FAs after this year, all are on under-achieving teams, none should be alarmingly expensive. Then you can start looking at how they would fit in and help the Bruins. I think you could make an argument for each guy.