What if Graf Zeppelin joined a concentrated Operation Berlin?

What effect would Graf Zeppelin have if she joined Bismarck, Scharnhorst, and Gneisenau in Operation Berlin?

She would force Britain to commit more carriers and capital ships, making it much harder to keep critical convoys moving.

A completed Graf Zeppelin accompanying Bismarck, Scharnhorst, and Gneisenau would multiply the Royal Navy's force-allocation problem. British practice sought numerical superiority, so one hostile carrier would encourage deployment of two British carriers while three German capital ships demanded an even larger surface group. Those ships would have to come from the Mediterranean, hunting forces, or convoy escorts. The main German gain would be strategic disruption: critical convoys might pause because a single old battleship was no longer an adequate escort.