How a submarine-focused Germany changes Royal Navy strategy

What would change if Germany built a one-dimensional fleet of submarines, destroyers, and aircraft rather than capital ships and cruisers?

Britain could cover much of the Atlantic with destroyers and smaller escorts, then shift more of its capital-ship and carrier strength to the Mediterranean and Far East.

A German navy without capital ships or cruisers would present a narrower Atlantic problem. Destroyers and smaller patrol or escort vessels could do much of the work, with cruisers chiefly serving as flagships. British battleships, battlecruisers, and aircraft carriers could then concentrate in the Mediterranean and Far East. Operating major ships in the Indian Ocean would also reduce their exposure to the German submarine threat. The opponent's force mix determines where the Royal Navy can concentrate its capital ships.