I'll be editing some of my old Civs to make them a little.. better, in my eyes.
Yi Sun-sin: Naval Units now get +7 Combat Strength when defending instead of +10 Combat Strength. +25% Experience and +100% Production towards Naval Units when at War with a Major Civilization now, instead of +50% Experience.
Grenadier: Bonus has been changed to +5 Combat Strength when attacking, with an additional +3 Combat Strength when attacking a District.