I think Flores has shown that he's a back up catcher - a good one, but still a back up. He seems worn down.
I'm not sure who else is out there that would be an upgrade and would be worth giving up significant pieces.
And who would be a one-year rental, because Ramos is the actual catcher. There's nobody who fits that billet - useful, but cheap and short-term.
I think there are really two options - 1. Davey needs to mix a little more onion into the soup in the guise of "resting Flores" and start to approach a 50/50 split 2. They need to go get an old backup who won't produce any more than Flores does, but who can carry the workload if need be.
If they decide to go option 2, I would love to see them go get Schneider from the Phillies - he's on a one-year deal, he'll cost nothing, he's a great clubhouse guy, plus the good 2005 mojo. Yes, I know, he can't hit. And really can't much catch these days either, but still. Do it.