Would concentrating more of Beatty's battlecruisers with the Grand Fleet have changed the Run to the South at Jutland?
Short answerNewer ships and better armor might have reduced losses, but removing slower ships could also let Beatty surge ahead of the Fifth Battle Squadron and encounter trouble sooner.
NotesEven the more modern 13.5-inch battlecruisers carried limited armor. A force freed from older 24- to 25-knot ships could make 28 knots, but that extra speed might widen its separation from the Queen Elizabeth-class Fifth Battle Squadron. Replacing weaker ships does not produce a simple one-directional improvement in a fast-moving fleet action.