Point of Divergence: Two Kongo-class battlecruisers are dispatched on the night of 3/4 June, to bombard the airfields at Midway Atoll under the cover of darkness, just like was attempted repeatedly IOTL at Henderson Field on Guadalcanal.
The IJN had both failures and successes when this was attempted at Guadalcanal, thwarted when American surface forces accepted nighttime battles. A bombardment could deprive the Americans of scouting and strike capacities with ramifications for the rest of the battle. The mission risks carefully husbanded IJN capital ships. At the same time, American attacks directed towards these dreadnoughts are a distraction from the Japanese carriers.