Harrison played about as much in his last month as his replacement (Castro) did. And at least Harrison wasn't given countless chances in the OF. But that's little consolation.
In both cases, Thomson clearly overvalues his veteran/alleged chemistry. He seemed to say as much yesterday when the idea of giving Wilson a look over Merrifield or Pache came up.
Suzuki isn't really any better than Marsh. If he's available, the acquistion cost for a controllable starting LF whom you really only need as a platoon LF would be exorbitant. You want to leave Marsh in LF against RHP because he hits them and he's a great fielder there. Any day you started Suzuki in LF and Marsh in CF you'd have a worse defense.
Of course, there's aways RF. Would the Cubs take Casty and half his salary if the Phillies took all of Suzuki's? (Probably not, nor are the Phillies going to unload Nick at the deadline IMO.)