Would Britain build treaty super cruisers if Germany fielded larger mini-Scharnhorst-type ships?
Short answerLikely yes; a fast 9.2-inch cruiser could hunt Deutschlands and let the battleship program focus on different requirements.
NotesA British super cruiser would be a force multiplier rather than a replacement capital ship. A fast 9.2-inch-gunned raider hunter could answer the Deutschlands without forcing every battleship to cover that mission. Designers would then have more freedom to optimize the King George V program, including its armament and declared performance. The cruiser allowance could therefore change battleship choices even though the two types served different roles.