I do think negative attitudes spread like wildfire, and they are very detrimental. So first off I would trade anyone that is a prime contributor to bitchy, negative, unprofessional, immature, and selfish attitudes. So without knowing where this is coming from I will mention a few I would not want to see go.
I would like to see Papi retire as a Red Sox.
I hate to think of Dustin not part of the club.
Sweeney, Aviles, Salty, Middlebrooks, Dubront and Salty are few off the top of my head that seem to play really hard, have good attitudes and could produce well for several years pretty inexpensively.
Pretty much anyone else can go. And I think with Bobby V at the helm you get young hungry players that might still want to learn something- I don't think Vs personality matches up great with head case super stars. I mean look at how many no name or new name pieces have contributed well this year..... mean while the "superstars" have been over all flat.
These are just thoughts off the top of my head.