I was kinda shocked that there was debate about him. I know he was mentioned in Radomski's book, but I don't really trust him.
Good Idea: When thinking of Mike Piazza, the term "Best Offensive Catcher in History" is usually right behind. As it should be. His 141 wRC+ blows away any other catcher's number, including Bench and Fisk. He also trumps all other HoF catchers in: Slugging, OPS, HR, ISO, and wRAA. And a lot of the other stats (OBP, wOBA, AVG, etc) he may not be at the top, but he's pretty close to it. I don't see a reason why Piazza should NOT be in the Hall of Fame.
Bad Idea: Anyone else remember Piazza trying to play defense behind the plate? It was a comedy of errors. In fact, his TZ rating is the worst for any HoF catcher, as is his Fld+Pos score (which takes into account the difficulty of the position in that era). He was a great offensive catcher, but was not a defensive one and that is probably more important for his position. If he were a LF, we wouldn't be having this discussion. He doesn't belong.
Verdict: Mikey gets the highest score ever for a catcher. Better than Bench, better than Berra. His offense was that good. Best offensive catcher in history. That's all the writers need to think of when it comes to voting for Piazza. Best. Offensive. Catcher. In. History. Put him in.
The only question should be: Dodgers cap or Mets Cap. I pick Mets cap, mostly because of this one moment: