Renown and Repulse as early Admiral-class battlecruisers

What if Renown and Repulse had been laid down as Admiral-class battlecruisers?

A Tiger-derived design with eight 15-inch guns is plausible, but the clarified scenario requires Hood's later form before Jutland and reverses the historical design sequence.

An Admiral-class design built in place of Renown and Repulse must be distinguished from Hood as completed. A continuation of Tiger could have carried eight 15-inch guns with more protection and a modest speed increase. Fleet initially suggests roughly 28.5 to 29 knots, while the higher estimate of about 32 knots depends on adopting small-tube boilers and a longer hull. The questioner's clarification instead specifies Hood's later form, built before Jutland. That would put design choices shaped by later combat experience into earlier ships and make those ships influence the eventual Hood. It also disrupts the procurement sequence leading toward G3 and N3, without supplying the historical reasons for those later designs. Hood's actual compromises arose partly because her design changed during construction.