Heroes' Profile Avatars as Rewards for finishing Campaigns?

I noticed when playing Age of Empires 3 that some profile icons require you to finish certain campaigns to unlock. The profile icons are often the heroes/characters from the campaigns.
There are plenty of heroes in aoe2 that aren't available as profile iconsCurrently,
there are 45 Campaigns (16 being historical battles) and around 155 hero units in the scenario editor.

you can make it so that each campaign gives 3 icons from completing them on 3 difficulty settings.
OR that all hero icons are unlocked upon completion of the level they're involved in
OR add fun quests/achievements/challenges to unlock each icon which adds more overall content to the game
also It would be really cool to have more icons :D

https://preview.redd.it/uw5rtdqbc9271.jpg?width=835&format=pjpg&auto=webp&s=1978299b1acdc37b8c7072a6181ce0ca7bbfff58