You make some good points.
I'll just point out part of why Voit is so good in New York is the stadium. It's a much better fit for his swing. The Cardinals could not offer that
The way this team changes it's tune on Carpenter's defense is both fascinating and somewhat concerning. It was crazy to think of him playing first. Then it was the only position he could play. And now, how dare we have concerns about his third-base defense? Which one is it? Seems to change by the season, right?
Jose Martinez has proven to be a steady, strong hitter who has no true defensive home on the field. In some ways, he's Carpenter-like, though Carpenter is a better defensive player than Martinez. Jose is a real risk out there. I hate to say it, because he works his tail off, but he's a DH.
That, I think more than anything, is where the Cardinals are with this.
They love his offense. They know his defense isn't going to be anything different than what it is. It's a wonky fit and they already have a somewhat wonky fit in Carpenter. So, see what he brings on the trade market to see if you can get a better fit for your team as constructed. The problem will be getting the right return because of his offensive plus, his affordability and control and his profile as a guy who really only fits with an American League team.
My worry is not trading Martinez as much as settling for something that is not a fair trade.
The Cardinals should avoid that.
He's too god to give away, and this can't be a Matt Adams, it's-better-for-him-this-way kind of deal.
As for Voit, I hope he continues to rake. Love that kid and his family.