Why fleet-reform scenarios stop at 1942

Why are the fleet-reform scenarios limited to 1941-42?

By that point, wartime commitments constrain what can be changed, and later reforms are unlikely to take effect before the war ends.

The proposed reform scenarios concentrate on 1941-42 because that period still leaves room to alter wartime outcomes. After 1942, the Axis fleets are judged to have fewer effective options. Existing commitments increasingly determine what can be done. A later change also needs time to take effect, and some would arrive too late to matter before the war ended.