Bag O' Mail, Part II: Bullpen blueprint, extensions for young hitters, walk-up music, chances at contention in 2024, pitching investments, and more

Readers have questions; writer has answers, some of them possibly even correct and coherent

Part I of this mailbag dropped recently, so now let’s dig into Part II. Forthwith …

From Brian: 

I've seen a lot of talk about how the Cards might repair their rotation, but not a lot about how they might upgrade their similarly sorry bullpen. How confident are you (given Mo's track record, plus available internal or external options) in the team's abilit…