You can now view the game setup settings during a conquest game, and use cheats to modify them. You can even do things like turn off the diplomacy system halfway through the game!
There's now a setting for reduced visual noise, which gets rid of animations, fragments, background elements, and most particles, to make the game more accessible for people with vision/visual processing issues.
If you are editing a ship in multiplayer, you are no longer forced to watch unrelated intercepts.
Turning off monsters now also turns off starter monsters.
Increased land anemone range.
Flipped around some AI buildings that were pointing the wrong way.
Landships can now cross oceans to friendly ports.
Spy action notices are now shown as normal notices on the left of the screen instead of being a popup.
Ammo overlay no longer shown for weapons that don't need ammo.
Coronation victory setting explains that it also controls final ritual victory.
Torpedo bombers now wait until they have a good shot instead of launching their torpedo as soon as possible.
The game now detects when an incompatible driver is being used and automatically turns on graphics compatibility mode and tells the player, instead of crashing out. This isn't a full solution, but it's at least better. If you have an uncle that works at AMD, let me know.