Not sure if these have been mentioned already or are already being worked on but here are a few of my suggestions.
-- Timelines for the post-game statistics. Everybody loves timelines (or maybe I'm just obsessed with them).
Examples: Overall Score, Economy Score, Population, Resources Gathered, Buildings Built, Trade Income, Etc.
-- Active abilities for special units like Heroes. Perhaps start with (n)one ability and gain more with experience.
Examples: Rally (Heal), Battle Cry (Speed/Damage), Commander's Horn (Damage/Armor)
-- Option to set the default stance for all soldiers you make.
