Making Yamato more useful through speed and publicity

What would you change to make Yamato a better and more useful battleship?

Increase speed, improve the secondary armament, and publicize the ship so its prestige and deterrent value can actually influence opponents.

Greater speed, a better secondary battery and publicity are the proposed improvements. Secrecy limits the deterrent and prestige effect of a ship whose size and armament opponents do not know. Speed would make Yamato more useful in choosing engagements and operating with other fleet units. Her main-gun range is given as roughly 42 kilometres at 45 degrees, with a shell flight approaching 100 seconds. At that elevation, lowering the guns to reload and then raising them again reduces the rate of fire. Those limits qualify what the impressive maximum range means in a moving naval engagement.