How much faster would British battlecruisers become if the 23-knot Orion design were selected?
Short answerLion would probably be built for about 28 knots, with Queen Mary and Tiger pushed toward 30 knots.
NotesA 23-knot battle line would put pressure on the speed of the battlecruisers operating with it. After referring to existing standards around 27.5 to 28 knots, the answer places Lion at about 28 knots in this counterfactual. Queen Mary and Tiger could be pushed toward 30 knots.