After reviewing footage from content creators and from feedback in the discord, I've determined that supply extracts and retaliations do not need a difficulty bump. All missions with a difficulty value of 1 (datatap mission and both stages of countering dark events) have been bumped to difficulty value 2 (about 3 extra enemies on the map on Legend). All assault mission difficulties are now also configurable from XComGameBoard.ini.
After reviewing footage from content creators and from feedback in the discord, I've determined that supply extracts and retaliations do not need a difficulty bump. All missions with a difficulty value of 1 (datatap mission and both stages of countering dark events) have been bumped to difficulty value 2 (about 3 extra enemies on the map on Legend). All assault mission difficulties are now also configurable from XComGameBoard.ini.
Fixes #585