To have a unit outline system that works dynamically when units get behind buildings, terrain, or other map objects/artifacts that may obstruct their view. Outlines should not appear when what’s obstructing a unit is another unit.
To have unit outlines match player colors:
It would be nice if units had player-based color outlines, like, having red team units with a red outline, and yellow team units having a yellow outline.
To easily select covered/hidden units:
A common issue in AoE1:DE is that units behind forest or buildings are ver hard -sometimes even impossible- to select or perform actions with, such as gazelles and villagers, as well as other small units that get behind trees or big buildings.
To be able to opt-out of outlines:
It would be cool to have an option to disable outlines for a clean/realistic view.