Midway does have the ability to run a lengthy sea battle since the ship hardness can be adjusted.
I ran a sunday night scramble last month that was a fleet battle, and it sent ships back and forth across the sector 3 times in 90 minutes, the event had the fleets in gun range of each other for about 10 minutes of side by side pounding, then the planes would launch and do air to air and air to sea attacks, then the fleets would broadside again.
We only lost a couple of ships during that event, and it was a constant bombardment.
These things can be solved.
These settings are the ones that were supposed to work with Operation Downfall but didn't, now they do work perfectly.