How might Lexington-class battlecruisers have fared in the Second World War?
Short answerThey could have been useful fast carrier escorts after modernization, but their relatively light armour would remain a vulnerability.
NotesA plausible interwar modernization path resembles the one followed by the Kongos. Additional protection and updated systems could move the Lexingtons toward the lightly armoured end of the fast-battleship spectrum. Their speed would be especially valuable when escorting carrier task forces. They could also hunt raiders or operate as fast surface wings without having to fight the enemy battle line directly. Light original armour would remain the central vulnerability whenever speed failed to control the engagement.